Ensure weighing accuracy with certified calibration weights
Calibration weights are precision mass artefacts used to verify, adjust and document scale performance, providing process security and repeatable results in production, quality assurance and laboratories. They come in defined nominal values and accuracy classes such as E1, F1 and M1, so you can match the right weight to the scale’s readability and application to avoid false confidence or unnecessary cost. Correct handling—using gloves or tweezers, storing weights in their case and avoiding contamination—keeps them reliable, while routine checks at multiple points in the weighing range reveal issues caused by vibration or temperature changes.
20 kg Block Weight OIML F1, Polished Stainless Steel, 100 mg Tolerance - KERN
Combining OIML Class F1 accuracy, a 20 kg nominal mass and a polished stainless steel block design, this test weight supports traceable calibrations and a dependable measurement routine; order the item directly via Metav Werkzeuge or consult our specialists if further technical details are required. KERN 326-38 Block Test Weight (20 kg, OIML Class F1) The KERN 326-38 block test weight is a precision 20 kg reference mass designed for calibration and verification of laboratory and industrial scales under OIML Class F1 standards. OIML Class F1 accuracy 20 kg nominal mass Polished stainless steel block Recommended protective case Consistent accuracy for traceable measurements The block is manufactured to OIML Class F1, which guarantees a maximum permissible error of 100 mg for the 20 kg nominal mass; this level of precision makes it suitable as a reference mass for routine calibrations and internal quality control. By using a certified reference such as this, measurement uncertainty is reduced and documentation for audits becomes straightforward, supporting reliable process control and fewer rejections in production environments. The result is a measurable improvement in repeatability and confidence in weighing results. Robust finish for long service life and easy handling Built from polished stainless steel, the block form offers corrosion resistance and a hygienic surface that is easy to clean after use on the workshop floor or in the lab. The design combines a compact block shape with a handling form adapted for secure lifting and placement; this minimises handling time and risk of damage. The KERN construction and the stainless finish contribute to long-term dimensional stability, so the mass remains a dependable reference between calibrations. Compliance guidance and calibration options for assured validity EG initial verification for test weights will no longer be possible after 30.11.2025; for continued traceability, a DAkkS calibration is recommended and is equivalent for most professional applications. The product is suitable as a single reference weight for scale verification and can be integrated into in-house calibration procedures to maintain conformity with internal and external standards. For transport and storage, a protective case is advised because of the high accuracy class, ensuring the mass keeps its calibrated state over time. For precise calibration requirements and ordering of the KERN 326-38, contact Metav Werkzeuge in Emmerich for tailored advice and optional DAkkS calibration — email info@metav-werkzeuge.com or call +49 2822 7131930. Technical Data Article number: 326 SKU: 326-38 GTIN: 4045761232853 Manufacturer: KERN Origin: DE Facts Nominal mass: 20 kg Tolerance (OIML): 100 mg Commodity code: 84239090 Special features Polished stainless steel Block form with handling shape OIML Class F1 certified Single test weight for calibration tasks Recommendation: use protective case DAkkS calibration recommended; EG initial verification not possible after 30.11.2025 FAQ What level of accuracy does this test weight provide? The KERN 326-38 block test weight is certified to OIML Class F1, which corresponds to a tolerance of 100 mg for the 20 kg nominal mass and is suitable for routine calibration and quality control. Can this weight be used for both laboratory and industrial scales? Yes, the 20 kg block test weight is intended for calibration and verification of laboratory and industrial scales where an OIML Class F1 reference is required. Is a protective case necessary for this test weight? A protective case is recommended for the KERN 326-38 because the high accuracy class makes the mass sensitive to contamination and mechanical damage during transport or storage. What calibration is advisable given the change to EG initial verification? Since EG initial verification for test weights is no longer possible from 30.11.2025, a DAkkS calibration is recommended for equivalence in traceability and documentation. Who manufactures the weight and where is it from? The weight is manufactured by KERN and the origin is indicated as Germany. Manufacturer: KERN — Distributed by Metav Werkzeuge, Emmerich am Rhein, Germany • info@metav-werkzeuge.com • +49 2822 7131930
20 kg Calibration Weight Block OIML M1 Stainless Steel Shot-Blasted, 1 g Tolerance - KERN
Secure OIML M1 accuracy and a robust stainless steel block construction in one reference mass; benefit from traceable calibration options and order directly via Metav Werkzeuge or consult our advisors for DAkkS services. KERN 346-08 Block Calibration Weight (20 kg, OIML M1) A KERN 346-08 block calibration weight designed for industrial and laboratory scale verification, suitable for routine checks and reference measurements OIML class M1 accuracy Nominal mass 20 kg Stainless steel, glass-bead blasted finish Block design for stable placement Consistent accuracy for routine verification The OIML M1 classification ensures the reference mass meets stringent accuracy requirements, with a stated tolerance of 1 g for the nominal 20 kg value. This level of precision supports reliable routine verification and reduces the risk of weighing-related production errors. As a single reference weight, the item is optimised for repeatable checks and documented measurement processes, helping to maintain quality control across the workshop and production line. Robust construction for longevity and easy handling Made from stainless steel with a glass-bead blasted surface, the weight combines corrosion resistance with a finish that minimises surface reflections and smudging. The block design provides a low centre of gravity and a stable contact area, simplifying positioning on various scale pans and reducing handling-induced variability. The compact form and durable material translate into long service life and lower maintenance effort compared with more delicate reference masses. Traceability, calibration and compliant use The reference mass is supplied as a single block weight compliant with OIML M1, making it suitable for many industrial calibration tasks. Note that EC type approval (EG-Erstzeichnung) is no longer possible after 30.11.2025; accordingly, a DAkkS calibration is recommended for traceable certificates and broad acceptance in quality systems. Stocking a DAkkS-calibrated reference weight supports audit readiness and aligns calibration routines with recognised national standards. Contact Metav Werkzeuge in Emmerich for availability and DAkkS calibration options for the KERN 346-08 block calibration weight Technical data SKU: 346-08 Manufacturer: KERN GTIN: 4045761117143 Article number: 346 Facts Nominal mass: 20 kg Tolerance (OIML M1): 1 g Commodity code: 84239090 eClass: 32120103 Special features Material: stainless steel, glass-bead blasted Design: block weight OIML class: M1 Origin: DE Recommended: DAkkS calibration (EC type approval not available after 30.11.2025) FAQ What does OIML M1 mean for everyday calibration tasks? OIML M1 denotes a recognised international accuracy class; the KERN 346-08 meets this class and is suitable for many industrial and laboratory verification procedures where systematic weighing accuracy is required. Is a calibration certificate included or recommended? A calibration service is recommended. For traceability and formal documentation, a DAkkS calibration is advised for the KERN 346-08 to provide an accredited certificate acceptable in most quality systems. How does the material finish affect performance? The stainless steel, glass-bead blasted finish limits corrosion and eases cleaning, while the block geometry improves stability on scale platforms; these features reduce handling errors and support repeatable results with the reference mass. Can this weight be used for legal-for-trade verification? The KERN 346-08 conforms to OIML M1 accuracy class for reference purposes; for official legal-for-trade approvals, relevant national regulations should be consulted and DAkkS calibration considered where required. KERN — Metav Werkzeuge, Emmerich am Rhein — info@metav-werkzeuge.com — +49 2822 7131930
20 kg Calibration Weight Block, OIML Class M1, Painted Cast Iron, 1 g Tolerance - KERN
Take advantage of the combination of OIML Class M1 accuracy, a 20 kg nominal mass and a coated cast iron block design for reliable, repeatable calibration checks; order the weight via Metav Werkzeuge or consult our team for specification matching. Block calibration weight by KERN — 20 kg, OIML Class M1, coated cast iron The Block calibration weight is a compact calibration reference intended for routine verification and adjustment of industrial and laboratory scales, providing a stable mass reference in workshop and quality-control environments. OIML Class M1 certified Nominal mass: 20 kg Coated cast iron block design Precise conformity for everyday calibration needs This block serves as a stable reference mass that meets OIML Class M1 requirements, offering a defined tolerance of 1 g. The standardised accuracy class simplifies traceability in routine checks and documentation, reducing uncertainty when comparing a balance's readout with a known mass. By using a certified reference, calibration intervals can be planned more effectively and internal quality procedures become easier to justify during audits. Robust construction that supports long-term reliability Manufactured as a coated cast iron block, the design emphasises mechanical stability and longevity. The compact geometry minimises handling errors and contact points that could alter apparent mass, while the protective coating resists surface corrosion in typical workshop environments. This combination reduces the need for frequent replacement and helps maintain consistent performance during regular verification cycles. Practical handling and storage for safe use The block form factor simplifies placement on platforms and inside weighing pans, supporting efficient calibration workflows. When used with suitable lifting or handling aids, the solid construction keeps centre of mass predictable and stable during transfers. Routine care — gentle cleaning and dry storage — preserves the coating and the defined surface condition that underpins repeatable measurements, helping to keep maintenance time and process interruptions to a minimum. Documentation and integration into quality systems The product's defined nominal mass and documented tolerance allow straightforward inclusion in calibration logs and ISO-style quality records. For traceability, the weight can be referenced by its SKU and GTIN within asset registers, streamlining inventory control and compliance reporting. Choosing a standardised reference mass simplifies comparisons between different balances across workshops and production lines. Contact Metav Werkzeuge in Emmerich for tailored advice on integrating this KERN calibration weight into existing quality routines — email info@metav-werkzeuge.com or call +49 2822 7131930 for fast, practical guidance and reliable supply. Technical data Article number: T346-8-A Manufacturer: KERN SKU: 346-88 GTIN: 4045761241657 Origin: CN Facts Nominal mass: 20 kg Tolerance (OIML): 1 g ECLASS: 32120103 Special features Coated cast iron Block design OIML Class M1 Single calibration weight Customs tariff number: 84239090 FAQ What accuracy class does this weight conform to? The weight conforms to OIML Class M1, which is specified with a tolerance of 1 g for the 20 kg nominal mass and is suitable for routine calibration and verification tasks. Is the 20 kg block suitable for workshop scales and laboratory balances? Yes. The 20 kg block is designed as a calibration reference for industrial and laboratory scales; selection should follow the instrument manufacturer's recommended test masses and the intended verification tolerance. How should the calibration weight be stored to preserve its accuracy? Store the weight in a dry, dust‑free environment and avoid aggressive cleaning agents; the coated cast iron surface benefits from gentle care to maintain the surface condition that supports repeatable measurements. Does the product come with a certification document? The item is supplied as an individual calibration weight in OIML Class M1; for audit or calibration records, reference the SKU 346-88 and GTIN 4045761241657 when recording the component in quality documentation. Can this block be used for field checks or only in a controlled lab? The block's robust coated cast iron construction suits routine field checks and controlled laboratory use; however, environmental conditions and handling practices should be considered to maintain the declared tolerance. Metav Werkzeuge, Emmerich am Rhein — Email: info@metav-werkzeuge.com — Tel: +49 2822 7131930
20 kg Calibration Weight Stainless Steel Fine-Turned OIML F2, 300 mg Tolerance - KERN
Benefit from OIML F2 accuracy, robust fine‑turned stainless steel construction and a stackable design that speeds up calibration workflows; order directly via Metav Werkzeuge or consult our specialists for tailored advice. KERN 337-151 Calibration Weight — 20 kg, OIML F2, Fine‑turned Stainless Steel The KERN 337-151 is a single calibration weight intended for precise control and verification of industrial and laboratory scales, combining certified accuracy with a durable, space‑saving form. OIML class F2 accuracy Nominal weight 20 kg Fine‑turned stainless steel finish Stackable for compact storage Consistent accuracy for reliable measurements A certified OIML F2 reference mass provides a dependable baseline for verification and routine checks. The nominal 20 kg rating, paired with a specification tolerance of 300 mg, ensures that readings remain within internationally recognised limits for many calibration tasks. Using a certified control mass reduces uncertainty in weighing procedures, improves repeatability and speeds up conformity checks. The construction and certification make this reference suitable for use in calibration labs and production quality control where documented precision is required. Robust material and ergonomic handling reduce downtime Manufactured from fine‑turned stainless steel, the weight resists corrosion and surface wear that can affect long‑term performance. The dense, precisely machined finish simplifies cleaning and inspection routines, while the stackable design makes storage efficient and reduces the risk of damage in busy workshops. These mechanical choices translate into lower maintenance effort and less downtime for calibration schedules. A single, well‑engineered reference mass like this reduces the need for frequent replacements and supports consistent measurement chains. Integration, traceability and practical benefits The reference mass is designed for straightforward integration into existing calibration procedures and documentation practices. Clear identification via SKU and GTIN assists stock control and traceability within the quality management system, while the compact cylinder dimensions (136×217 mm) support compatibility with standard balance pans and storage cases. By using a standardised control mass, audit trails become easier to maintain and the process of proving measurement competence — internally or to external assessors — becomes faster and more transparent. For tailored calibration advice or to secure this KERN calibration solution through Metav Werkzeuge in Emmerich, contact our specialists by email or phone for precise delivery and accessory suggestions Technical data Article number: 337 SKU: 337-151 Manufacturer: KERN GTIN: 4045761006621 Facts Nominal weight: 20 kg OIML class: F2 Tolerance: 300 mg Cylinder dimensions: 136×217 mm Country of origin: DE Tariff code: 84239090 Special features Material: fine‑turned stainless steel Design: stackable single weight Application: calibration of scales and balances Intended use: control/reference weight FAQ What accuracy class does this calibration weight meet? The calibration weight meets OIML F2 accuracy class specifications and is suitable as a control weight for many laboratory and industrial checks. Is the 20 kg weight suitable for routine calibration of industrial scales? Yes, the 20 kg reference mass is intended for routine verification and control of industrial and laboratory scales where an OIML F2 mass is appropriate. How should the weight be handled and stored to preserve accuracy? Store the weight in a protective case and keep it clean and dry; the fine‑turned stainless steel surface minimises corrosion but regular inspection and gentle cleaning preserve long‑term accuracy. Can this reference mass be used for official calibrations and audits? The documented OIML F2 class and the nominal 20 kg specification support use in internal audits and as part of a traceable calibration routine, though laboratory accreditation requirements should be checked for scope. What are the physical dimensions and how compact is storage? The cylinder measures 136×217 mm and the stackable design allows compact storage of single weights. Metav Werkzeuge, Emmerich am Rhein, Germany — info@metav-werkzeuge.com — +49 2822 7131930
20 kg Calibration Weight, Stainless Steel Turned Knob, OIML Class F2, 300 mg Tolerance - KERN
Take advantage of precise verification, robust stainless-steel construction and a convenient knob design for reliable scale calibration; order directly via Metav Werkzeuge or consult our specialists for tailored advice. Calibration weight KERN 337-15 — 20 kg, OIML class F2 Calibration weight KERN 337-15 is a high-precision single test weight designed for verification of laboratory and industrial scales; its knob shape and fine-turned stainless-steel finish suit routine calibration and traceable testing. Calibration weight 20 kg, OIML class F2 Fine-turned stainless steel finish Knob design for secure handling German manufacture, high accuracy 300 mg Precise verification that reduces uncertainty and downtime The 20 kg calibration mass in OIML class F2 provides a clear, verifiable reference for mid-range scales where traceability and repeatability matter. With a declared tolerance of 300 mg, the mass supports reliable routine checks and reduces the frequency of corrective adjustments, contributing directly to efficient production workflows and lower calibration overhead. This level of accuracy is appropriate for laboratory balances and industrial units requiring certified reference masses for conformity checks. Robust construction for long-term reliability Manufactured from fine-turned stainless steel, the weight combines corrosion resistance with a carefully machined surface that minimises wear and contamination. The knob design ensures safe placement and removal on weighing pans while reducing contact with the actual measurement surface, helping to keep the reference mass free from oils and residues. The combination of material and form supports longevity and repeatable performance in demanding workshop and laboratory environments. Traceability, storage advice and workshop suitability Supplied as a single test weight, the mass is suitable for calibration tasks where documented traceability and consistent handling are required. Originating from Germany, the item carries a clear product identity (SKU 337-15, GTIN 4045761006607) and is recommended for use with a protective case due to its high accuracy; correct storage preserves the declared 300 mg tolerance and supports long-term conformity. The weight is particularly suited to calibration benches, maintenance routines in production and quality assurance checks where standard-compliant reference masses are needed. Contact Metav Werkzeuge in Emmerich for personalised advice on selecting suitable calibration weights, recommendations for protective cases, or to request a formal offer for the KERN calibration range. Technical data Article number: 337 SKU: 337-15 GTIN: 4045761006607 Manufacturer: KERN Nominal mass: 20 kg Shape: Knob form Material: Fine-turned stainless steel OIML class: F2 Origin: DE Tariff number: 84239090 Facts Nominal mass: 20 kg Tolerance (OIML F2): 300 mg Dimensions (cylinder): 128 × 230 mm Special features Single weight (Einzelgewicht) Knob shape for safe handling Fine-turned stainless-steel finish Recommended: protective case for storage FAQ What accuracy class does this calibration weight conform to? The calibration weight KERN 337-15 is certified to OIML class F2, with a declared tolerance of 300 mg, making it suitable for many laboratory and industrial verification tasks. Is the weight suitable for daily routine checks in a workshop? Yes, the single test weight with its robust stainless-steel finish and knob design is intended for routine verification and regular calibration procedures in workshops and calibration benches. Does the product require a protective case? Due to the very fine tolerance of the KERN 337-15, the manufacturer recommends using a protective case to avoid contamination and preserve the declared accuracy during storage. What material and handling features ensure durability? The weight is made from fine-turned stainless steel and features a knob form that reduces direct contact with the measuring surface, supporting long-term stability and ease of handling. Where is the calibration weight manufactured? The KERN 337-15 is manufactured in Germany and supplied as a single, traceable calibration mass for verification use. Manufacturer: KERN — Address: Germany — Contact: not provided
20 kg Precision Test Weight Block Eco, OIML Class M3, Painted Cast Iron, 10 g Tolerance - KERN
Take advantage of the combination of verified conformity, robust cast-iron construction and compact block design to keep calibration work efficient and reliable; order the weight directly via Metav Werkzeuge or consult our specialists for further technical data. ECO block weight (Class M3) – 20 kg cast-iron calibration weight by KERN The ECO block weight (Class M3) is a compact calibration weight designed for routine verification and adjustment of scales in workshops and production environments. OIML Class M3 certified accuracy Nominal mass 20 kg for routine checks Painted cast-iron construction for durability Compact block design for stable placement Conformity that supports reliable results The OIML Class M3 designation confirms that this calibration weight meets internationally recognised tolerances for routine verification. With a nominal mass of 20 kg and a specified tolerance of 10 g, the unit provides measurable, repeatable reference values for adjustment and internal quality control. Such standardised accuracy reduces measurement uncertainty during calibration and supports efficient workflows where Class M3 compliance is appropriate. Durable construction for everyday use Manufactured in painted cast iron, the Block Eco format prioritises long-term durability and straightforward handling in industrial settings. The protective coating helps guard against surface corrosion and wear, while the compact geometry of the block design ensures stable placement on flat weighing platforms. Together, these attributes contribute to a lower life-cycle cost and fewer interruptions for replacement, making it a practical choice for regular verification cycles. Practical application and handling guidance The single calibration weight is intended for routine checks and adjustment procedures on bench, floor and industrial scales where M3 accuracy is sufficient. The stated tolerance 10 g means that deviations remain within the declared limit for this class; for tasks requiring tighter uncertainty budgets, higher-accuracy classes should be selected. To preserve precision, store the weight in a dry, stable environment, avoid impacts and clean only with a soft cloth. For traceable processes, record calibration events and maintain handling discipline to protect mass integrity. For tailored advice on suitability for a specific application or to request technical documentation, contact Metav Werkzeuge in Emmerich — info@metav-werkzeuge.com, +49 2822 7131930 — for prompt and expert support. Technical data Article number: 366 SKU: 366-78 Manufacturer: KERN GTIN: 4045761241848 Facts Mass: 20 kg OIML class: M3 Tolerance (OIML): 10 g Tariff number: 84239090 Country of origin: CN Special features Material: painted cast iron Design: Block Eco Product type: single calibration weight FAQ What does OIML Class M3 mean for everyday use? OIML Class M3 indicates standardised tolerance suitable for routine verification and adjustment tasks where M3 accuracy is acceptable; the ECO block weight meets these criteria. What is the declared tolerance of this weight? The declared tolerance for the ECO block weight is 10 g, which corresponds to the OIML M3 specification for a 20 kg nominal mass. What material is the weight made from and why is that beneficial? The KERN 20 kg ECO block weight is made from painted cast iron, offering robust mechanical resistance and surface protection that support frequent workshop use. Is this supplied as a single item or as a set? This article is supplied as a single calibration weight in Block Eco format, intended for individual verification tasks. How should the weight be stored to maintain accuracy? Store the weight in a dry, vibration-free location, avoid impacts and chemical exposure, and handle with care to prevent surface damage that could affect mass. Metav Werkzeuge, Emmerich am Rhein — info@metav-werkzeuge.com — +49 2822 7131930
20 kg Precision Test Weight Block Eco, Painted Cast Iron, OIML Class M1, 1 g Tolerance - KERN
Take advantage of the combination of certified accuracy, robust coated cast-iron construction and straightforward handling to maintain reliable measurement routines. Order the calibration weight directly via Metav Werkzeuge or consult our specialists for application advice and delivery from Emmerich. ECO Block Calibration Weight, Class M1 — KERN (20 kg, coated cast iron) The ECO Block Calibration Weight is a 20 kg, OIML Class M1 block designed for routine calibration of industrial and laboratory scales, offering a compact, durable reference for workshops and quality departments. OIML Class M1 certified 20 kg nominal value Coated cast-iron construction Compact block design Reliable reference for regular scale checks The ECO Block Calibration Weight provides a stable, certified mass reference for frequent verification of weighing equipment. With OIML M1 classification and a tolerance of 1 g, it supports conformity checks on bench and floor scales used in production, goods reception and quality control. The block format simplifies placement and handling while the nominal 20 kg value covers common calibration points in industrial metrology. This facilitates consistent results and reduces downtime through quick on-site verification procedures. Robust construction with practical benefits Manufactured from coated cast iron, the weight combines mechanical robustness with surface protection to limit corrosion and surface wear. The block design minimises rolling and improves stability on scale pans, translating into safer handling and fewer position-related measurement errors. For technical teams with limited metrology resources, this construction delivers cost-effective longevity: the protective coating reduces maintenance frequency while preserving accuracy across routine uses. Traceability, documentation and operational fit As a certified M1-class reference, the unit supports traceability chains when used alongside documented calibration routines; the recorded 1 g tolerance aids decision-making about recalibration intervals and permissible deviations. The compact reference is well suited for workshops seeking a pragmatic balance between precision and everyday robustness. Metav Werkzeuge’s position as a quality filter for the European market ensures dependable stock and clear procurement channels from Emmerich to the workbench. For assured accuracy from a recognised manufacturer, request this KERN ECO block calibration weight via Metav Werkzeuge or contact our Emmerich team for detailed application guidance and supply options Technical Data Article number: 346-78 Manufacturer: KERN GTIN: 4045761241695 Origin: CN Specifications Nominal value: 20 kg Tolerance: 1 g OIML class: M1 HS code: 84239090 Features Coated cast iron construction (Gusseisen lackiert) Block Eco design Single calibration weight SKU: 346-78 FAQ What does OIML Class M1 mean for everyday calibration? OIML Class M1 denotes a recognised international accuracy class; the KERN ECO block weight meets this class and is suitable for routine checks where M1 tolerance is required. How precise is the 20 kg reference weight? Precision is defined by the tolerance of 1 g for this 20 kg nominal value, which guides acceptable deviation thresholds during verification procedures. Is the block suitable for use in busy workshop environments? Yes, the coated cast-iron construction and block format are designed for regular handling and offer enhanced durability for workshop conditions. Metav Werkzeuge, Emmerich am Rhein, Germany — info@metav-werkzeuge.com — +49 2822 7131930 — WhatsApp +49 170 2837271
20 kg Precision Test Weight Knob Shape Polished Stainless Steel, OIML Class F1, 100 mg Tolerance - KERN
Take advantage of the proven combination of OIML Class F1 accuracy, a 20 kg nominal value and a polished stainless steel finish for dependable scale verification. For traceable results and calibration options, order the KERN 327-15 directly via Metav Werkzeuge or consult our advisers for DAkkS calibration and accessory recommendations. KERN 327-15 Calibration Weight — 20 kg, OIML Class F1, Polished Stainless Steel The KERN 327-15 is a 20 kg OIML Class F1 calibration weight in knob form, intended for precise verification of laboratory and industrial scales where traceability and low uncertainty are required. OIML Class F1 accuracy 20 kg nominal value Polished stainless steel finish Knob shape for ergonomic handling Accurate results for verification and quality control The OIML Class F1 specification of this calibration weight guarantees a defined maximum permissible error of 100 mg, making it suitable for routine verification and adjustment of mid-range laboratory and industrial balances. Used as a reference mass during calibration procedures, the weight reduces measurement uncertainty and supports compliance with internal quality processes. The clear nominal value of 20 kg simplifies selection for verification workflows and aids documentation for audits. Built for longevity and simple handling Crafted from polished stainless steel, this test weight resists corrosion and is straightforward to clean, supporting longevity in workshop and laboratory environments. The knob shape facilitates safe placement and removal on balances, reducing the risk of contact damage during handling. Manufactured in Germany, the design focuses on robust construction and repeatable performance, which helps maintain stable results over many calibration cycles. Traceability, calibration options and regulatory note For traceable certification, a DAkkS calibration is recommended; such calibration is appropriate for most professional applications and provides a documented measurement chain. Please note that first-type approval under EU procedures for calibration weights will not be possible after 30 November 2025; therefore, securing an accredited calibration certificate is advised for regulatory and quality assurance purposes. The weight’s material and form support routine recalibration and storage in a suitable protective case to preserve accuracy. For procurement, calibration options and accessory advice relating to KERN quality, contact Metav Werkzeuge in Emmerich for tailored guidance and DAkkS certificate arrangements Technical Data Article number: 327 SKU: 327-15 GTIN: 4045761004863 Manufacturer: KERN Origin country: DE Facts Nominal value: 20 kg Tolerance (OIML F1): 100 mg Dimensions (cylinder): 129×245 mm Tariff code: 84239090 Special features Material: polished stainless steel Form: knob shape OIML class: F1 Recommended: use a protective case for storage and transport Recommendation: DAkkS calibration advised; first-type EU approval not possible after 30.11.2025 FAQ What level of accuracy does this calibration weight provide? The KERN 327-15 delivers OIML Class F1 accuracy with a maximum permissible error of 100 mg for the 20 kg nominal value. Is a calibration certificate available for this weight? A DAkkS calibration is recommended for the KERN 327-15 and can be arranged to provide traceable certification suitable for most professional requirements. What material is the weight made from and why does it matter? The weight is made from polished stainless steel; this ensures corrosion resistance, simple cleaning and consistent mass over time, preserving calibration stability. Is the knob shape suitable for safe handling on balances? Yes, the knob form of the KERN 327-15 facilitates safe placement and removal on scales, reducing the risk of impact or surface damage during handling. Manufacturer: KERN | Manufactured in Germany | Distributor contact: info@metav-werkzeuge.com, +49 2822 7131930
20 kg Test Weight Block Eco OIML Class M2, Painted Cast Iron, 3 g Tolerance - KERN
Take advantage of OIML M2 accuracy and the robust 20 kg block design to ensure reliable scale checks with minimal downtime; combine durable painted cast iron construction for long service life and straightforward handling. Order the calibration weight directly via Metav Werkzeuge or ask our consultants for application support. Eco block weight – calibration weight, 20 kg, OIML M2 (KERN) The Eco block weight is a single calibration weight designed for routine verification of scales and test benches, offering a compact block design for robust everyday use. Single calibration weight, OIML M2 Nominal value 20 kg Painted cast iron block design Suitable for workshop and test bench use Reliable calibration for daily testing The block mass complies with OIML M2 accuracy and a stated tolerance of 3 g, making it suitable for routine verifications where repeatable, traceable results are required. The nominal 20 kg value provides a clear reference point for load checks and performance monitoring of industrial and workshop scales. Because the class rating and tolerance are declared, integration into existing calibration schedules is straightforward and supports quality assurance processes without unnecessary complexity. This factual basis reduces uncertainty in acceptance testing and helps maintain measurement consistency across shifts. Robust construction that withstands workshop demands Built as a compact block design from painted cast iron, this reference mass resists typical workshop wear while remaining simple to handle and store. The painted surface reduces corrosion risk and keeps markings legible, supporting long-term readability and minimal maintenance. The design emphasises practicality for high-use environments where robustness and longevity translate into lower total cost of ownership. Combined with Metav’s quality filter and reliable logistics from Emmerich, this weight is positioned as a dependable component in a workshop’s calibration equipment pool. Easy integration into calibration routines and stock lists As a single, clearly specified calibration item, the block mass simplifies procurement and inventory management for laboratories and service departments. Its defined OIML classification and nominal value make it compatible with standard test procedures and documentation; traceability is facilitated by the included identifiers and manufacturer data. When a stable reference mass is required for routine checks or as part of periodic maintenance, this solution supports efficient workflows and predictable measurement outcomes, reducing interruptions to production and inspection schedules. Contact Metav Werkzeuge for tailored advice and fast supply from Emmerich — our consultants provide application guidance and delivery options to match specific calibration needs. Technical data Article number: 356 SKU: 356-78 GTIN: 4045761241800 Manufacturer: KERN Material: painted cast iron Nominal weight: 20 kg OIML class: M2 Tolerance: 3 g Country of origin: CN HS code: 84239090 Facts Nominal value: 20 kg Tolerance: ±3 g OIML class: M2 Weight unit: kilogram GTIN numeric: 4045761241800 Special features Block Eco design Single calibration weight Painted finish for corrosion resistance Intended for scale verification and workshop testing FAQ What accuracy class does this calibration weight meet? The calibration weight meets OIML M2 specifications with a declared tolerance of 3 g, ensuring suitability for routine verification tasks. Is the 20 kg block suitable for workshop use? Yes, the 20 kg block mass features a painted cast iron construction and a compact block design, making it appropriate for workshop and test bench environments. Who manufactures this reference mass? This reference mass is manufactured by KERN and distributed with identifiers including SKU 356-78 and GTIN 4045761241800. Can this weight be used for traceable calibration procedures? The declared OIML M2 class and specified tolerance support integration into documented verification procedures where M2 accuracy is acceptable. Manufacturer: KERN; Country of origin: China; GTIN: 4045761241800
20 kg Test Weight Button Shape Polished Stainless Steel OIML E1 10 mg Tolerance - KERN
Take advantage of the combination of highest-class accuracy, robust stainless-steel construction and ergonomics for reliable balance verification; order directly via Metav Werkzeuge or ask our consultants for application advice. KERN 307-15 calibration weight — 20 kg, OIML class E1 The KERN 307-15 is a single calibration weight designed for high-precision verification of laboratory and industrial balances, optimised for traceable mass checks in calibration and QA environments OIML class E1 accuracy Nominal mass 20 kg Polished stainless steel construction Knob form for secure handling Traceable accuracy that meets strict standards The weight conforms to OIML class E1, ensuring an exceptionally low nominal tolerance of 10 mg for a 20 kg reference mass. This level of accuracy is intended for laboratories and calibration houses where legal metrology and tight measurement uncertainty budgets are paramount. Certification to this class implies that the mass value has been determined and documented with a measurement uncertainty compatible with high-precision work. Using such a reference mass reduces uncertainty propagation in verification tasks and supports compliance with internal quality procedures and external audits. Durable finish and safe handling for routine use Constructed from polished stainless steel, the component combines corrosion resistance with a surface finish that minimises contamination and eases cleaning. The knob design provides a clear ergonomic advantage when placing or removing the mass from balances, reducing the risk of accidental contact and transfer errors during handling. These features extend the service life of the mass and help maintain calibration integrity; paired with a protective case—recommended for storage—damage during transport or storage is kept to a minimum. Practical integration into calibration workflows Designed as a single reference mass for precision balances, the item supports straightforward inventory and traceability procedures thanks to its clear identification (SKU 307-15, GTIN 4045761002791). The robust construction and tight tolerance make it suitable for periodic verification schedules and inter-laboratory comparisons. For organisations seeking to simplify procurement and ensure consistent quality, Metav Werkzeuge provides centralised supply from Emmerich, where incoming goods are subject to a quality filter that supports reliable stock and delivery for workshop and laboratory applications. For application-specific advice or to secure the KERN 307-15 through Metav Werkzeuge, contact our team in Emmerich at info@metav-werkzeuge.com or call +49 2822 7131930 for tailored ordering and delivery guidance Technical data Article number: 307-15 Manufacturer: KERN GTIN: 4045761002791 SKU: 307-15 Facts Nominal mass: 20 kg Tolerance (OIML): 10 mg OIML class: E1 Tariff number: 84239090 Country of origin: Germany Special features Material: Polished stainless steel Shape: Knob form Category: Single calibration weight Recommended accessory: Protective case FAQ What does OIML class E1 mean for measurement uncertainty? OIML class E1 indicates the highest level of nominal tolerance for calibration masses; the KERN 307-15 therefore provides a declared tolerance of 10 mg for a 20 kg mass and is suitable where minimal added uncertainty is required. Is the 20 kg mass suitable for routine balance verification? Yes, the 20 kg nominal mass is intended for verification and calibration of precision balances; the polished stainless-steel construction and knob form support regular use in laboratory and industrial calibration routines. How should the weight be handled and stored to preserve accuracy? Handle the mass using its knob and clean with lint-free cloths; store the reference mass in a protective case as recommended to avoid surface damage and contamination that could affect the calibrated value. Does the product come with official identification for traceability? The KERN 307-15 is identified by SKU 307-15 and GTIN 4045761002791, which supports traceability and documentation within calibration records and inventory systems. Can the mass be used for accredited calibration services? The E1 classification and documented tolerance make the unit appropriate as a reference mass within accredited calibration procedures, subject to the laboratory’s scope and accreditation requirements. KERN · Germany
20 kg Test Weight Knob Shape Polished Stainless Steel OIML E2, 30 mg Tolerance - KERN
Take advantage of a highly consistent 20 kg reference mass with OIML class E2 accuracy and a durable, polished stainless steel finish to secure reliable calibration results. Order the weight directly via Metav Werkzeuge or contact our consultants for advice on DAkkS calibration and suitable protective cases. KERN 317-15 Calibration Weight — OIML class E2, 20 kg, polished stainless steel A precision reference mass in knob form for laboratory and professional scale calibration, designed for repeatable results and straightforward handling OIML class E2 accuracy Nominal mass 20 kg Polished stainless steel surface Knob shape for safe handling Consistent accuracy for critical calibrations The KERN 317-15 is a calibration weight engineered to provide reproducible results where tight tolerances matter. Classified as OIML class E2, the reference mass carries a specified tolerance of 30 mg, which makes it suitable for verification and calibration of high-precision balances and analytical scales. The combination of exact nominal mass and documented tolerance supports traceable measurement chains and helps to minimise uncertainty in routine and accredited workflows. Robust construction with practical handling features Manufactured from polished stainless steel, the weight is resistant to corrosion and surface damage that could alter mass over time. The knob shape simplifies secure lifting and placement on balance pans while reducing contact with the load-bearing surface; this design choice preserves the mass datum during repeated use. The smooth finish is also easier to clean, limiting particulate adhesion and ensuring the long-term stability expected of a reference mass. Practical integration into metrology routines As a reference mass, this product fits laboratories, calibration service providers and industrial quality departments that require compact, repeatable calibration artefacts. The solid construction and standardised dimensions support storage in protective cases and compatibility with balance pans commonly used in metrology benches. For applications requiring formal traceability, a DAkkS calibration can be arranged to document performance under accredited conditions, providing a clear audit trail for quality systems. For reliable traceability and advice on fitting a DAkkS certificate or selecting an appropriate protective case, contact Metav Werkzeuge in Emmerich by email at info@metav-werkzeuge.com or by telephone on +49 2822 7131930 — our metrology consultants will assist with selection and calibration options. Technical data Article number: 317 SKU: 317-15 GTIN: 4045761003804 Nominal mass: 20 kg OIML class: E2 Tolerance (OIML): 30 mg Material: Polished stainless steel Shape: Knob Dimensions (cylinder): 129×227 mm Country of origin: DE Tariff number: 84239090 Facts Weight value: 20 kg Tolerance: 30 mg Dimensions: 129×227 mm ECLASS: 32120103 Special features OIML class E2 Polished stainless steel finish Knob form for handling Manufacturer: KERN Recommended: Use protective case for storage and transport FAQ What is the intended use for this reference mass? The KERN 317-15 calibration weight is intended for verification and calibration of high-precision balances and scales where OIML class E2 performance is required. How precise is the 20 kg calibration weight? The reference mass carries an OIML class E2 tolerance of 30 mg, providing the precision expected for laboratory and service-grade calibrations. Is a calibration certificate available with the weight? A DAkkS calibration can be arranged for the KERN 317-15 to provide accredited traceability suitable for quality management and audit requirements. Can the weight be used in humid or corrosive environments? Built from polished stainless steel, the weight offers resistance to corrosion and is suitable for standard laboratory and workshop conditions; prolonged exposure to aggressive chemicals should be avoided. What is the recommended handling and storage practice? Use a protective case for transport and storage, handle the reference mass by the knob to avoid touching load surfaces, and keep the weight clean to maintain long-term stability. Are there accessories recommended for this calibration weight? A dedicated protective case is advised for the KERN 317-15 to prevent surface damage and contamination during storage and transport. KERN — Germany; Distributed by Metav Werkzeuge, Emmerich am Rhein. Contact: info@metav-werkzeuge.com | +49 2822 7131930
20 kg Test Weight Stackable, OIML Class F1, Polished Stainless Steel, 100 mg Tolerance - KERN
Take advantage of OIML Class F1 accuracy, the 20 kg nominal mass and a polished stainless steel finish for dependable calibration results; order the KERN 327-151 directly via Metav Werkzeuge or consult our specialists for application advice KERN 327-151 — 20 kg OIML Class F1 control weight, polished stainless steel The KERN 327-151 is a knob-shaped, stackable 20 kg control weight designed for precise calibration tasks in laboratories and industrial workshops OIML class F1 accuracy 20 kg nominal mass Polished stainless steel finish Stackable, knob-shaped design Consistent compliance and traceable accuracy for measurement assurance This calibration weight is specified as OIML Class F1, with a tolerance of 100 mg, which ensures repeatable results when verifying and adjusting balances. The classification indicates suitability for high-precision control tasks rather than legal-for-trade approvals; note that the EU first-type approval for weights will no longer be available after 30.11.2025. For sustained traceability and broad applicability, a DAkkS calibration is recommended, providing documented conformity to national and international calibration standards and helping to maintain measurement integrity across production and quality-control processes. Robust finish and ergonomic handling to protect investment Manufactured from polished stainless steel, the control weight resists corrosion and abrasion in workshop environments, reducing surface wear that could affect mass over time. The knob-shaped design simplifies placement and removal from balances, while the stackable form minimises storage footprint and secures orderly handling during multi-weight procedures. These design choices reduce handling errors and limit the need for frequent recalibration, supporting operational continuity. Practical applications that improve workflow efficiency Suitable for laboratories, calibration labs and industrial workshops, this 20 kg control weight supports routine verification of floor scales, bench balances and comparator set-ups. Using a high-precision reference reduces measurement uncertainty during part inspection or batching operations, which in turn limits production rework and downtime. The combination of certified accuracy and durable construction provides a cost-effective means to maintain process control and to document measurement reliability for audits and quality management. Recommended storage and calibration approach to extend service life To protect the reference surface and maintain accuracy, an appropriate carrying or storage case is advisable; accessories are available in the related section. Regular calibration—preferably with a DAkkS certificate—ensures the nominal mass remains within specified limits and supports traceability. Given the product’s classification and polished finish, correct storage and handling are key to preserving the reference condition and ensuring long-term performance. Contact Metav Werkzeuge for tailored advice on integrating the KERN 327-151 into existing calibration routines and to arrange DAkkS calibration from our Emmerich facility Technical data Article number: 327 SKU: 327-151 GTIN: 4045761004870 Manufacturer: KERN Country of origin: DE Commodity code: 84239090 Core data Nominal mass: 20 kg Tolerance (OIML): 100 mg Dimensions (cylinder): 136×217 mm Special features Knob-shaped Stackable Polished stainless steel OIML class F1 DAkkS calibration recommended EU first-type approval not possible from 30.11.2025 FAQ Is the KERN 327-151 suitable for legal verification? The KERN 327-151 is an OIML Class F1 control weight intended for calibration and control; it is not primarily intended for legal-for-trade verification and the EU first-type approval for weights will not be available after 30.11.2025. What is the specified tolerance of this control weight? The control weight has an OIML tolerance of 100 mg, matching the Class F1 specification for a 20 kg nominal mass. What material and handling features does the weight offer? Made from polished stainless steel, the KERN 327-151 features a knob-shaped, stackable design to simplify placement on balances and to reduce storage space. Can the KERN 327-151 be supplied with calibration? A DAkkS calibration is recommended for the KERN 327-151 to ensure traceability and documented conformity for most professional applications. Are protective cases or accessories recommended? For preservation of the polished surface and to limit handling-related wear, a protective case is recommended; a selection of suitable cases is listed in the accessories section. KERN — Germany. Manufacturer address and direct contact not specified.
20 kg Test Weight Stackable, OIML Class M1, Stainless Steel Turned, 1 g Tolerance - KERN
Benefit from the combination of OIML M1 accuracy, fine-turned stainless steel and a stackable design for efficient calibration workflows. Order the calibration weight directly via Metav Werkzeuge or consult our specialists for tailored technical advice. KERN 347-151 calibration weight — 20 kg, OIML M1, stainless steel, stackable The KERN 347-151 calibration weight is a stackable control weight designed for precise verification of laboratory and workshop scales and balances. OIML class M1 accuracy 20 kg nominal value Fine-turned stainless steel Stackable for compact storage Reliable calibration for consistent measurement results The KERN 347-151 is manufactured to OIML M1 tolerances, providing a declared tolerance of 1 g at the 20 kg nominal value. This specification means the control mass meets internationally recognised accuracy limits for secondary calibration and routine verification tasks. Using a certified control weight with defined tolerances reduces measurement uncertainty in verification routines and supports reproducible results for quality assurance processes. The declared class and tolerance are objective indicators of suitability for many laboratory and production environments. Durable construction that withstands workshop conditions Constructed from fine-turned stainless steel, the weight combines surface precision with corrosion resistance. The turned finish minimises surface irregularities that could trap contaminants and simplifies cleaning after use, which helps preserve metrological properties over time. Robust stainless construction ensures longevity in mixed-use environments where routine handling and transport are required. The solid material and finish support stable mass distribution, which is essential for maintaining precision during repeated verification cycles. Compact handling and storage to streamline workflows A stackable design reduces storage footprint and eases handling in busy workshops and calibration labs. Stackability allows several weights to be stored safely and quickly identified when multiple nominal masses are required for stepwise tests. Clear identification by SKU and GTIN facilitates inventory control and traceability within procurement and calibration records. The compact arrangement speeds up verification procedures, helping to keep calibration downtime to a minimum and maintain production continuity. Supply reliability and quality provenance for professional users Produced by KERN, the weight is intended as a professional-grade tool for scale verification and quality control tasks. Metav Werkzeuge acts as a dedicated distributor with a quality-filtering approach from Emmerich, offering reliable supply and product information for industrial customers. For organisations seeking a consistent source of metrology equipment, the combination of established manufacturer standards and a steady logistics partner supports compliance and operational planning without compromising equipment performance. Choose the KERN 347-151 for precise, workshop-ready verification — contact Metav Werkzeuge in Emmerich for expert advice and reliable supply. Technical data Article number: 347 SKU: 347-151 Manufacturer: KERN GTIN: 4045761008922 Origin: Germany Facts Nominal value: 20 kg OIML class: M1 Tolerance (OIML): 1 g Dimensions (cylinder): 136×217 mm HS code: 84239090 eClass: 32120103 Special features Material: fine-turned stainless steel Design: stackable Use: control/calibration weight Category: calibration weights FAQ Is this weight suitable for routine verification of balances and scales? The KERN 347-151 calibration weight is designed for routine verification and control tasks on laboratory and workshop scales, meeting OIML M1 accuracy requirements for many secondary calibration applications. What accuracy class and tolerance does the weight have? This control weight conforms to OIML M1 with a declared tolerance of 1 g at the 20 kg nominal value. Can the weight be stored together with other masses without risk of damage? Yes, the stackable design permits compact and safe storage of multiple masses, reducing the risk of accidental surface damage during storage. How is the weight identified for inventory and traceability? Identification is possible via SKU 347-151 and GTIN 4045761008922, which supports procurement records and inventory management. What maintenance keeps the mass within specification? Regular cleaning to remove residues, stable storage conditions and gentle handling preserve the finish and metrological properties of the fine-turned stainless-steel weight. KERN – Germany – GTIN: 4045761008922
20 kg Weight Basket For Block Or Calibration Weights, OIML Class M1, Stainless Steel - KERN
Combine precise OIML class M1 calibration, robust stainless-steel construction and efficient handling to streamline scale testing workflows; order the weight basket directly via Metav Werkzeuge or consult our specialists for tailored advice. Weight basket 347-022-005 (KERN) — OIML class M1, stainless steel The weight basket 347-022-005 is a standardised carrier for block and control weights, designed to test heavy-duty floor scales, pallet scales and crane scales with a compact, ready-to-use solution. Standardised basket for heavy-duty scales Calibrated to OIML class M1 Stainless-steel, glass-bead blasted finish Fits 10×10 kg or 5×20 kg configurations Faster, safer calibration for heavy-duty weighing equipment The weight carrier speeds up verification of high-capacity weighing systems by allowing control weights and the basket to be placed on the scale in a single operation. This combined handling reduces handling stages and therefore the risk of incorrect placement or accidental damage, delivering measurable time and cost savings during routine checks. The design is optimised for lifting and placement on pallet and floor scales, which improves safety and consistency in daily calibration routines. Built to last — corrosion-resistant stainless construction Manufactured from stainless steel with a glass‑bead blasted finish, the carrier resists workshop wear and simplifies cleaning. The robust material choice supports long service life and minimal maintenance, ensuring reliable performance in industrial environments. The construction also protects the enclosed weights during transport and storage, reducing the need for separate cases and lowering the number of handling steps across the calibration process. Certified accuracy for traceable verification Calibrated to OIML class M1, the basket provides a certified reference when paired with the recommended configuration of calibrated masses. This conformity supports audit requirements and quality control processes by delivering traceable and repeatable verification outcomes. Where traceability to international standards is required, the built-in calibration class eases documentation and helps maintain compliance with regulatory or internal quality management systems. Practical workflow efficiency: store, lift and test in one step The carrier accepts common loading configurations such as 10×10 kg or 5×20 kg, consolidating storage and testing. With a maximum total load of 120 kg, the system covers a wide range of heavy weighing applications, from pallet scales to crane scales. The integrated solution reduces changeover time between tests and simplifies logistics on the shop floor. For workshops seeking consistent, repeatable verification with minimal setup, the carrier offers both reliability and operational clarity. For precise calibration needs, choose the KERN weight basket and contact Metav Werkzeuge for delivery and expert advice from our Emmerich team. Technical Data Article number: 347-022-005 GTIN: 4045761225015 Manufacturer: KERN Country of origin: DE Core specifications Basket mass: 20 kg Nominal basket value: 20 kg Maximum total load: 120 kg Possible loading: 10×10 kg or 5×20 kg ECLASS: 32120103 Design & features Material: stainless steel, glass-bead blasted Calibrated to OIML class M1 Suitable for floor scales, pallet scales, crane scales Serves as storage and handling aid for control weights FAQ What type of scales can be tested with this basket? The carrier is intended for heavy-duty floor scales, pallet scales and crane scales and is suitable for standard workshop and industrial verifications. Is the basket supplied calibrated? Yes, the basket is calibrated to OIML class M1, providing a standardised basis for traceable checks when used with calibrated masses. Which loading configurations are supported? Typical configurations are 10×10 kg or 5×20 kg control weights; the carrier accepts these arrangements for streamlined testing procedures. What is the maximum total weight the carrier can handle? The system supports a maximum total load of 120 kg, including the basket and installed weights. What material is the carrier made from and how durable is it? Constructed from stainless steel with a glass‑bead blasted finish, the carrier offers high resistance to workshop wear and straightforward maintenance. KERN, DE
20 mg Precision Calibration Weight Plated Disc M1 Tolerance 0.3 mg Stainless Steel, OIML M1 - KERN
Take advantage of OIML class M1 accuracy together with a polished stainless steel disc design and a tight tolerance of 0.3 mg for reliable, repeatable calibrations; order the weight directly via Metav Werkzeuge or ask the consultants for advice and calibration options. Milligram Weight 348-05 – OIML Class M1, 20 mg (KERN) The Milligram weight 348-05 is a polished stainless steel test weight designed for high-precision calibration of laboratory and analytical balances in the milligram range. OIML class M1 precision Nominal value 20 mg Polished stainless steel finish Disc shape for stable placement Accurate calibration for analytical balances High-precision calibration demands components that combine stability, repeatability and traceable tolerance limits. The OIML class M1 rating and a nominal value of 20 mg make this test weight suitable for fine adjustment and verification of analytical balances where milligram-level accuracy is required. The specified tolerance of 0.3 mg provides a clear, measurable acceptance criterion for calibration reports and uncertainty assessments. Explanations of tolerance and class help non-specialists understand suitability: OIML classes define maximum permissible errors for test weights, ensuring that calibration results meet recognised metrological standards and support documented traceability. Robust materials that reduce maintenance and handling risk A polished stainless steel construction delivers both corrosion resistance and simple cleaning, reducing the risk of contamination or handling marks that can affect readings. The disc shape ensures stable placement on weighing pans, diminishing tilt-related errors during measurements. These material and form choices prolong service life under regular laboratory use and limit downtime for replacement or cleaning. Where repeatability is essential, the combination of surface finish and mechanical stability translates directly into fewer retests and a more efficient calibration workflow. Traceability, compliance and the role of calibration services Manufactured by KERN, this test weight supports traceable calibration chains when paired with an accredited service. Note that EC initial verification will no longer be possible from 30 November 2025; a DAkkS calibration is recommended for most applications as an equivalent means of ensuring documented accuracy and traceability. Metav’s position as a quality filter in Emmerich ensures supply reliability and a broad product range, helping workshops and laboratories centralise procurement and maintain consistent metrological standards across instruments. Contact Metav Werkzeuge in Emmerich for DAkkS calibration and procurement of the KERN 348-05; Metav’s specialists can advise on traceability and supply—email info@metav-werkzeuge.com or call +49 2822 7131930 Technical Data Article number: T348-A SKU: 348-05 Manufacturer: KERN Material: Stainless steel Form: Disc (Plättchenform) OIML class: M1 Nominal value: 20 mg Tolerance (OIML): 0.3 mg GTIN: 4045761240179 Country of origin: CN Tariff number: 84239090 Facts Nominal value: 20 mg Tolerance (OIML): 0.3 mg GTIN: 4045761240179 Tariff number: 84239090 eClass: 32120103 Special features Polished stainless steel finish Disc shape for stable placement OIML class M1 accuracy Recommended DAkkS calibration; EC initial verification not possible after 30 Nov 2025 FAQ What is the nominal value and class of this test weight? The KERN milligram weight 348-05 has a nominal value of 20 mg and is specified to OIML class M1 with a tolerance of 0.3 mg. Is the material suitable for routine laboratory use? Yes. The item is made from stainless steel with a polished finish, offering corrosion resistance and easy cleaning for regular laboratory handling. Which calibration is recommended for traceability? A DAkkS calibration is recommended for traceable results and documented accuracy, particularly since EC initial verification will not be available from 30 November 2025. For which balances is this weight appropriate? This test weight is intended for analytical and laboratory balances operating in the milligram range where OIML class M1 accuracy is required. Who manufactures this test weight? The weight is produced by KERN and distributed with Metav’s quality assurance and supply processes. Metav Werkzeuge, Emmerich am Rhein, Germany | info@metav-werkzeuge.com | +49 2822 7131930
20 mg Precision Caliper Weight Three-Point Disc, E2 Tolerance 0.01 mg, Stainless Steel - KERN
Benefit from OIML E2 accuracy, a 20 mg nominal value and a polished stainless steel plate for stable, repeatable results; order the Milligram weight directly via Metav Werkzeuge or ask our consultants if needed. Milligram weight KERN 318-05 — 20 mg OIML E2, polished stainless steel plate A Milligram weight KERN 318-05 designed for calibration of precision balances and laboratory scales, delivering traceable microgram-level performance in demanding metrology workflows OIML class E2 accuracy Nominal value 20 mg Polished stainless steel plate form Tolerance ±0.01 mg Traceable accuracy for high‑precision calibration The polished stainless steel construction and OIML E2 classification ensure a stable reference mass for sensitive instruments. The nominal 20 mg size is suited to microbalance verification where minimal drift and predictable handling are essential; the declared ±0.01 mg tolerance gives a clear specification for uncertainty budgets. For procurement and quality management, the measurable parameters support certificate-based traceability and allow integration into ISO/IEC 17025–aligned calibration plans. Robust design tailored to metrology workflows A plate-form geometry reduces edge effects during placement on pans of analytical balances, while the polished surface minimises contaminant adhesion and eases cleaning. The stainless finish is corrosion-resistant and compatible with common laboratory environments, contributing to long service intervals and reliable repeatability. Handling protocols benefit from the compact form: secure transport in a recommended case preserves accuracy and reduces the need for frequent re-calibration. Compliance, calibration and recommended use Note that EU initial verification (EG‑Ersteichung) of calibration weights will not be available from 30 November 2025; therefore a DAkkS calibration is recommended for most traceable applications. For high-accuracy records, a DAkkS certificate demonstrates conformity with national standards and supports audit requirements. The product is supplied as a precision reference mass for balance testing, routine checks and laboratory verification tasks where documented traceability and low uncertainty are required. For DAkkS calibration advice or to order the KERN 318-05 from Metav Werkzeuge in Emmerich, please contact info@metav-werkzeuge.com or call +49 2822 7131930 for personalised consulting and supply Technical data Article number: T318-A SKU: 318-05 GTIN: 4045761240445 Manufacturer: KERN Facts Nominal value: 20 mg Tolerance (OIML): ±0.01 mg OIML class: E2 Tariff number: 84239090 Special features Form: plate Material: polished stainless steel Origin: CN Recommendation: use a protective case; DAkkS calibration recommended; EG initial verification not available from 30.11.2025 FAQ What accuracy can be expected from this calibration weight? The KERN 318-05 is an OIML class E2 reference mass with a nominal value of 20 mg and a tolerance of ±0.01 mg, providing the precision required for microbalance checks and low-uncertainty calibration routines. Is the weight suitable for laboratory accreditation requirements? Yes. With a DAkkS calibration certificate, the KERN 318-05 fulfils traceability requirements commonly requested in ISO/IEC 17025 processes and supports objective evidence for audits. How should the weight be stored and handled to maintain accuracy? Store the weight in a dedicated protective case and handle with gloves or tweezers to avoid contamination; the polished stainless-steel surface reduces adhesion but careful handling prolongs calibration intervals. KERN — Origin: CN
20 mg Precision Milligram Weight Disc F2 Class, Polished Stainless Steel, 0.1 mg Tolerance - KERN
Take advantage of the combination of OIML class F2 accuracy, a 20 mg nominal value and a polished stainless steel disc to ensure reliable microbalance calibration and low-maintenance handling. Order the item directly via Metav Werkzeuge or consult our specialists for application and calibration advice. KERN 338-05 Milligram weight — OIML F2, 20 mg, polished stainless steel A KERN 338-05 milligram weight in disc form for traceable calibration of laboratory and quality-control microbalances. OIML class F2 accuracy Nominal value 20 mg Polished stainless steel disc Tolerance 0.1 mg Consistent microbalance results through certified accuracy Built for precision applications, this weight meets OIML class F2 requirements and has a nominal value of 20 mg with a declared tolerance of 0.1 mg. Such classification provides a verifiable baseline for calibrations and routine checks of high-resolution balances. The tight tolerance reduces measurement uncertainty during comparative procedures, supporting documented quality control and enabling reproducible results across repeated measurements. For laboratories and production inspection points, this translates into dependable measurement chains and easier conformity with internal standards. Robust material and form for handling and longevity Manufactured as a polished stainless steel disc, the design minimises contamination and surface wear while simplifying handling on microbalance pans. The polished finish reduces the risk of particulate adhesion and eases cleaning, which helps maintain long-term accuracy. The disc shape provides stable contact and centring on typical balance pans. For preservation of metrological integrity, an appropriate storage case is recommended to prevent mechanical damage and airborne contamination during transport and storage. Compliance guidance and calibration recommendations Note that EG initial verification of calibration weights will no longer be possible after 30.11.2025; accordingly, a DAkkS calibration is advised and accepted for most professional applications as an equivalent traceable verification. A documented DAkkS certificate supports laboratory accreditation and calibration records. The product’s specification and calibration options make it suitable for use in quality assurance, research settings and precision manufacturing where traceability and documented measurement uncertainty are mandatory. Contact Metav Werkzeuge for tailored calibration advice, DAkkS options and to discuss which accessories best protect and extend the service life of this KERN milligram weight Technical data Article number: T338-A SKU: 338-05 Manufacturer: KERN GTIN: 4045761240261 Facts Nominal value: 20 mg OIML class: F2 Tolerance: 0.1 mg Commodity code: 84239090 Special features Material: polished stainless steel Form: disc shape Origin: CN Recommendation: use a protective case Calibration advice: DAkkS calibration recommended; EG initial verification not possible after 30.11.2025 FAQ What accuracy class does this weight have? The weight is classified as OIML class F2, providing a declared tolerance of 0.1 mg suitable for high-precision balance checks. Which nominal value is the weight supplied in? This article is supplied as a 20 mg milligram weight, intended for microbalance calibration and verification. Is a protective case necessary for this weight? A protective case is recommended to prevent mechanical damage and contamination; it helps preserve the polished stainless steel surface and maintain long-term accuracy. Can this weight be DAkkS-calibrated? DAkkS calibration is recommended and applicable; a DAkkS certificate provides traceability and is accepted for most professional calibration requirements. Who is the manufacturer of the weight? The weight is manufactured by KERN; the product origin is recorded as China (CN). Manufacturer: KERN — Address: not specified — Contact: not specified
20 mg Precision Milligram Weight Plate, OIML F1, Polished Stainless Steel, 0.03 mg Tolerance - KERN
Take advantage of the combination of laboratory-grade accuracy, compact stainless-steel design and traceable calibration support for consistent small-mass measurements. Order the KERN 328-05 directly via Metav Werkzeuge or ask our consultants if needed. KERN 328-05 Milligram weight (OIML F1, 20 mg) — polished stainless-steel disc The KERN 328-05 is a precision milligram reference mass in disc form, engineered for calibration and high-resolution weighing tasks in laboratories and quality-control environments. OIML class F1 accuracy Nominal value 20 mg Polished stainless-steel disc design Tolerance 0.03 mg for precise calibration Consistent accuracy for low-mass calibration The KERN 328-05 delivers OIML class F1 performance at a nominal value of 20 mg, providing a reproducible standard for analytical balances and microbalances. The specified tolerance of 0.03 mg describes the permissible deviation under standard conditions and helps reduce measurement uncertainty when used as a reference mass. For laboratories that demand documented reliability, using a certified F1 weight minimises calibration drift and supports traceable measurement chains, which is essential for ensuring repeatable test results and meeting internal quality criteria. Durable form and material for long-term stability Manufactured as a polished stainless-steel disc, the mass combines corrosion resistance with easy surface maintenance. The disc shape supports secure placement on balance pans and reduces sensitivity to handling errors. A smooth finish lowers contamination risk and simplifies cleaning after use, preserving the calibration integrity over time. Because milligram weights are sensitive to environmental influences, a protective storage case is strongly recommended to prevent wear and particulate adhesion and to maintain the defined tolerance class. Seamless integration into calibration routines This calibration mass is suited for stepwise verification of precision balances and for use as a working standard in low-mass calibration procedures. Where statutory initial verification is required, note that EG initial verification of calibration weights will not be available after 30 November 2025; a DAkkS calibration is recommended for most traceability needs and is often equivalent for laboratory accreditation. Including a certified calibration record with the mass simplifies audit preparations and ensures compliance with internal SOPs and external quality assessments. Practical benefits that support productivity Selecting a dedicated 20 mg reference weight reduces the time spent on repeated adjustments and corrective actions during weighing tasks, contributing to smoother workflows. The combination of class-based accuracy and robust material choice results in fewer recalibrations and lower process interruptions. For facilities aiming to centralise supply and rely on consistent metrological quality, this small-mass standard supports precise measurement tasks across research, production control and quality assurance environments. Contact Metav Werkzeuge in Emmerich for DAkkS calibration advice, accessory recommendations and to arrange supply of the KERN 328-05 milligram weight. Technical data Article number / SKU: 328-05 Manufacturer: KERN GTIN: 4045761240353 Core specifications Nominal value: 20 mg Tolerance (OIML): 0.03 mg OIML class: F1 Tariff code: 84239090 Design & special features Material: polished stainless steel Shape: disc (plättchenform) Recommended accessory: protective case (etui) Calibration recommendation: DAkkS calibration advised Note: EG initial verification not possible after 30.11.2025 FAQ What does OIML class F1 mean for a 20 mg weight? OIML class F1 indicates a high-precision tolerance band suitable for calibration of high-resolution analytical balances; the 20 mg KERN 328-05 meets the strict limits associated with that class. Can the KERN 328-05 be used on any analytical balance? The 20 mg weight is intended as a reference for balances with appropriate resolution and load cell sensitivity; compatibility should be confirmed against the balance manufacturer’s calibration procedure. How should the milligram weight be stored between uses? Store the polished stainless-steel disc in a dedicated protective case to avoid contamination and mechanical wear; a clean, temperature-stable environment is recommended. Is a calibration certificate available for this weight? A DAkkS calibration is recommended and can be arranged to provide traceable documentation suitable for laboratory accreditation and audit purposes. Why is a protective case recommended for this weight? Due to the small nominal mass and tight tolerance, even minor contamination or scratches can affect accuracy; a case preserves surface condition and measurement reliability. Metav Werkzeuge, Emmerich am Rhein, Germany — info@metav-werkzeuge.com | +49 2822 7131930 | WhatsApp +49 170 2837271
20 mg Wire Milligram Test Weight E1, Stainless Steel Polished, 0.003 mg Tolerance - KERN
Precise micro‑calibration delivered by E1 accuracy and polished stainless steel construction. Combine the compact 20 mg nominal value with a tight tolerance 0.003 mg for dependable verification of analytical balances. Order this calibration weight directly via Metav Werkzeuge or consult our specialists for storage and accessory recommendations. Milligram weight 308-35 (KERN) — E1 class, 20 mg, polished stainless steel wire A Milligram weight 308-35 designed for high‑precision calibration of analytical and laboratory balances, supplied in wire form for delicate placement and minimal surface contact E1 OIML class for highest accuracy Nominal value 20 mg for micro‑calibrations Polished stainless‑steel wire form Tolerance 0.003 mg (OIML E1) Reliable micro‑calibration for analytical balances The E1 classification denotes the most stringent tolerance classes for calibration masses used in laboratories and calibration houses. With a nominal value of 20 mg and a documented tolerance of 0.003 mg, this mass standard reduces measurement uncertainty during verification procedures and supports consistent instrument performance. Laboratories benefit from a defined metrological basis when adjusting or checking analytical scales, as the high classification simplifies conformity assessments and routine checks. Robust construction and careful handling Manufactured in polished stainless steel and configured in a wire form, the mass combines corrosion resistance with a small contact area for precise placement on pans. The wire geometry minimises surface interaction and eases handling with tweezers or forceps, so the delicate calibration routine is less prone to contamination or handling error. The choice of material supports longevity and stable surface characteristics, which are essential when a mass is repeatedly used in traceable calibration cycles. Clear metrological performance for audits and records A tight specification such as tolerance 0.003 mg provides unambiguous numerical limits for acceptance and adjustment of weighing instruments. This level of precision is suitable for accredited environments where documented evidence of conformity is required. The OIML E1 rating indicates the mass can be integrated into calibration chains and quality records, facilitating audits and ensuring measurements remain within prescribed uncertainty allocations. Compact design for specialised workflows The small footprint and low nominal mass make this calibration weight especially useful in analytical chemistry, micro‑manufacturing and quality control of precision balances. The design supports frequent checks without occupying valuable bench space, and the polished finish simplifies cleaning between uses. Paired with a suitable case and careful handling practice, the mass aids repeatable results and efficient verification routines. For expert advice on storage, matching cases and accessory selection for KERN calibration weights, contact Metav Werkzeuge — our Emmerich‑based team will advise on suitability and delivery to your workshop Technical Data Article number / SKU: 308-35 Manufacturer: KERN GTIN: 4045761002975 Origin country: DE Tariff number: 84239090 Facts Nominal value: 20 mg Tolerance: 0.003 mg OIML class: E1 Weight form: wire Special features Material: stainless steel, polished Product group: OIML E1 calibration weights Intended use: micro‑calibration of analytical balances FAQ What does OIML class E1 mean for laboratory use? The OIML E1 designation signifies the highest precision category for calibration masses; the Milligram weight 308-35 (KERN) meets these standards and is suitable for traceable checks in accredited laboratory environments. How should the 20 mg wire mass be handled to avoid contamination? Handle the polished stainless‑steel wire mass with tweezers and, where possible, wear gloves; store the weight in a suitable case recommended by Metav Werkzeuge to preserve surface integrity and measurement reliability. Can this mass be used for routine balance adjustments? Yes, the 20 mg nominal value and the tight tolerance 0.003 mg make it appropriate for routine verification and adjustment of high‑resolution analytical balances when documented calibration standards are required. Is calibration or certification available for this weight? KERN supplies E1‑class masses intended for calibration chains; Metav Werkzeuge can advise on certification options and traceable calibration services suited to laboratory accreditation needs. Manufacturer: KERN — Seller and contact: Metav Werkzeuge, Emmerich am Rhein; Email: info@metav-werkzeuge.com; Phone: +49 2822 7131930
200 g Calibration Weight Button Shape OIML Class M3 Stainless Steel Turned, 100 mg Tolerance - KERN
Take advantage of the combination of reliable OIML M3 accuracy, compact 200 g nominal mass and durable stainless‑steel workmanship for consistent routine checks. Order the weight directly via Metav Werkzeuge or consult our specialists for tailored procurement. KERN 367-08 — single test weight, 200 g, OIML M3 A KERN 367-08 single calibration weight in knob form for routine verification and periodic checks of workshop and laboratory scales. OIML class M3 accuracy 100 mg 200 g nominal mass, knob form Fine‑turned stainless steel construction Made in Germany, robust workmanship Consistent measurement performance for routine verification The OIML M3 classification guarantees a defined maximum permissible error of 100 mg, providing predictable performance for everyday calibration tasks. With a 200 g nominal mass and documented tolerance, this weight supports reliable comparative checks and quick functional verification of balances and scales, reducing downtime through fast in‑line control. The specification is ideal for quality assurance cycles where repeatability and traceable limits are the main concern. Practical design that reduces handling errors Engineered as a knob‑shaped weight from fine‑turned stainless steel, the design combines tactile handling with corrosion resistance for long service life. The compact cylinder dimensions 28×47 mm allow precise placement on small pans and scales, and the knob profile supports secure gripping during transfers. The robust material and machining reduce surface defects that could affect mass distribution, so routine handling has minimal impact on nominal value. Smooth integration into calibration routines and equipment sets As a single weight in the Prüfgewichte category, this unit is suitable for maintaining scale performance across workshops, service technicians and small laboratories. The weight’s provenance in Germany and the clear identification by SKU and GTIN simplify inventory management and traceability within existing calibration records. When used as part of a documented control plan, this weight helps demonstrate organised verification practice and supports consistent measurement results across shifts. Contact Metav Werkzeuge in Emmerich for expert advice and ordered supply — email info@metav-werkzeuge.com or call +49 2822 7131930; local stock ensures prompt delivery to the workshop bench. Technical data Article number: 367-08 Manufacturer: KERN SKU: 367-08 GTIN: 4045761257276 Origin: DE Facts Nominal mass: 200 g Mass (kg): 0.2 OIML class: M3 Tolerance: 100 mg Cylinder dimensions: 28×47 mm Tariff number: 84239090 Special features Material: fine‑turned stainless steel Form: knob shape Product category: single weights (Prüfgewichte) Headline: Prüfgewicht KERN 367-08 FAQ What accuracy class does this test weight have? The KERN 367-08 is specified as OIML M3, with a maximum permissible error of 100 mg for the 200 g nominal mass. Is the weight suitable for workshop scale checks? Yes; the 200 g single weight is intended for routine verification and functional checks of balances and workshop scales. What material is the weight made from? The weight is manufactured from fine‑turned stainless steel, offering durability and resistance to corrosion. What are the dimensions and handling form of the weight? The cylindrical body measures 28×47 mm and is supplied in a knob form to facilitate secure handling and precise placement. Where is the weight produced? The KERN 367-08 is manufactured in Germany and supplied with clear identification for inventory and traceability. KERn · Germany
200 g Calibration Weight Knob Shape, Stainless Steel Turned, OIML Class F2, 3 mg Tolerance - KERN
Take advantage of a highly stable mass standard with OIML Class F2 accuracy and a fine-turned stainless steel finish for dependable calibration results; order directly via Metav Werkzeuge or consult our specialists for selection and accessories. KERN 337-08 — Calibration weight, 200 g, OIML Class F2, stainless steel The KERN 337-08 is a precision calibration weight in knob form designed for laboratory and workshop scales, offering reliable reference mass for routine checks and quality control. OIML Class F2 accuracy Fine-turned stainless steel surface Knob form for easy handling Precise accuracy for reproducible measurements The mass standard provides 200 g nominal mass with a certified tolerance of 3 mg, meeting OIML Class F2 requirements. Such classification guarantees that the weight is suitable for calibrating analytical and precision balances where small deviations matter. The classification system (OIML) defines permissible error limits for reference masses; compliance therefore reduces uncertainty in measurement chains and supports consistent process control. This makes the weight a rational choice where traceable and repeatable results are essential for documentation and quality assurance. Robust materials and ergonomic handling Manufactured from fine-turned stainless steel, the weight resists corrosion and surface wear, which helps maintain long-term stability. The knob form improves handling and placement, reducing the risk of contact-induced contamination or fingerprints that could affect the effective mass. With compact dimensions of 28×48.5 mm, the component fits into standard storage cases and balance pans while remaining easy to manipulate with tweezers or lifting tools used in calibration routines. The solid construction supports frequent use in production environments as well as in lab benches. Practical application and recommended care Engineered for routine calibration, laboratory checks and workshop verification, the unit serves as a practical single weight for adjusting scales or checking repeatability. Originating from Germany and supplied by an established manufacturer, the mass standard pairs well with a protective case—recommended for OIML‑class weights to prevent contamination and mechanical damage during storage and transport. The compact reference mass is therefore an efficient component in reducing downtime: it simplifies verification cycles and supports measurable process reliability across inspection points. Contact Metav Werkzeuge for tailored advice on the KERN 337-08 and recommended accessories; email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss suitability for specific balances or to request packaging options Technical data Article number: 337-08 Manufacturer: KERN GTIN: 4045761006423 Country of origin: DE Tariff number: 84239090 Facts Nominal mass: 200 g Mass (kg): 0.2 Tolerance (OIML): 3 mg Dimensions (cylinder): 28×48.5 mm OIML class: F2 Special features Material: stainless steel, fine-turned Form: knob form Recommended: use a protective case for storage Product group: single weights (individual weight) FAQ What tolerance is specified for this calibration weight? The KERN 337-08 has an OIML Class F2 tolerance of 3 mg, suitable for precision checks on analytical and laboratory balances. Is the mass suitable for regular workshop verification? Yes; the stainless steel construction and robust design make the 200 g mass appropriate for routine verification tasks in workshops and production environments. How should the weight be stored to maintain accuracy? A protective case is recommended for OIML-class weights to prevent contamination and mechanical damage; this helps preserve the calibration stability of the 200 g mass. What material is the reference mass made from? The weight is manufactured from fine-turned stainless steel, offering corrosion resistance and a stable surface finish for long-term use. Manufacturer: KERN — Address: Germany — Contact: info@metav-werkzeuge.com / +49 2822 7131930
200 g Calibration Weight, Knob Shape, Polished Stainless Steel, OIML E1, 0.1 mg Tolerance - KERN
Take advantage of the combination of OIML class E1 accuracy, a compact 200 g nominal mass and a corrosion‑resistant polished stainless finish to ensure repeatable calibrations and reduced measurement uncertainty — order the reference mass via Metav Werkzeuge or consult our specialists for accessory recommendations. KERN 307-08 — 200 g OIML E1 calibration weight, polished stainless steel The KERN 307-08 is a 200 g single calibration weight in OIML class E1, designed as a button‑style reference mass for laboratory and calibration applications where the highest repeatability is required OIML class E1 accuracy 0.1 mg tolerance Polished stainless steel, corrosion resistant Compact button design, 28×47 mm cylinder Suitable for laboratory and calibration use Reliable reference for exacting measurement tasks A class‑leading OIML class E1 rating with a nominal 200 g mass and a specified 0.1 mg tolerance provides a stable reference for high‑precision balances. This level of specification reduces calibration uncertainty and supports traceable results for quality assurance and compliance. Using a certified reference mass of this standard helps maintain measurement chains and supports audit readiness, contributing to consistent production and testing outcomes. Durable finish and ergonomic form for routine use The polished stainless steel finish combines corrosion resistance with an easy‑to‑clean surface, limiting contamination and drift over repeated use. The button form with a compact cylinder dimension of 28×47 mm allows secure handling and safe placement on balance pans, reducing handling errors. The robust surface treatment and solid construction extend service life under typical laboratory conditions while preserving the mass value over time. Traceability and documentation that support audits The reference mass is supplied with clear identification suitable for laboratory records and calibration logs; GTIN and SKU data support inventory control and procurement. As an E1 class mass, it is intended for the most demanding calibration tasks and scientific applications where documented traceability is mandatory. For these very accurate weights, a protective case is recommended to prevent contamination and mechanical damage; a selection of suitable cases is available in the accessories section. Practical integration into calibration routines The single reference mass format makes integration into existing calibration procedures straightforward: compatible with standard laboratory balances and useful as a primary check mass for scheduled verifications. Its compact size reduces storage space and the polished surface simplifies cleaning between uses. Regular use of a certified reference mass helps spot drift early, shorten corrective action cycles and maintain process control across production or testing workflows. Contact Metav Werkzeuge in Emmerich for personalised advice, accessory recommendations and secure supply of this KERN calibration weight via email at info@metav-werkzeuge.com or by phone/WhatsApp for prompt assistance Technical data Article number: 307 SKU: 307-08 GTIN: 4045761002739 Manufacturer: KERN Facts Nominal value: 200 g Tolerance: 0.1 mg OIML class: E1 Mass (kg): 0.2 Dimensions (cylinder): 28×47 mm Country of origin: DE Tariff number: 84239090 Special features Material: polished stainless steel Form: button Intended use: laboratory and calibration reference mass Recommended accessory: protective case FAQ What level of accuracy does this calibration weight provide? The KERN 307-08 offers OIML class E1 accuracy with a tolerance of 0.1 mg, providing a high‑precision reference for laboratory balances and calibration needs. Is the weight suitable for routine laboratory calibrations? Yes, the polished stainless steel button design and 200 g nominal mass make the reference weight suitable for routine verifications and scheduled calibrations of precision balances. How should the reference mass be stored when not in use? Store the weight in a protective case to prevent contamination and mechanical damage; for very accurate weights a case is strongly recommended to preserve the calibrated state. Can this weight be used for traceable documentation in audits? Yes, as an E1 class reference mass the item supports traceability and documented calibration records suitable for quality management and audit purposes. Does the product come with identification for inventory and procurement? The KERN unit includes SKU and GTIN identifiers to assist with inventory management and purchasing records Metav Werkzeuge, Emmerich am Rhein — Email: info@metav-werkzeuge.com — Tel: +49 2822 7131930 — WhatsApp: +49 170 2837271
200 g Cylinder Test Weight OIML Class M3, Painted Cast Iron, 39Ă—28 mm - KERN
Take advantage of reliable accuracy and robust construction for routine verifications; the combination of OIML class M3 conformity and a painted cast iron body ensures dependable, repeatable results in workshop and laboratory environments. Order via Metav Werkzeuge or consult the Metav team for specification support. KERN 366-92 calibration weight — OIML M3, 200 g, painted cast iron, cylindrical form A KERN 366-92 calibration weight designed for routine verification of balances and scales, suitable for workshop and industrial metrology where OIML M3 accuracy and durable construction are required Single calibration weight 200 g, OIML class M3 Cylindrical button shape for stable placement Painted cast iron construction for durability Made by KERN, manufactured in Germany Consistent accuracy for everyday verification This calibration mass offers OIML class M3 conformity with a nominal value of 200 g and a specified tolerance of 100 mg, making it suitable for routine checks and in‑house verifications of laboratory and workshop scales. The stated tolerance provides a clear, measurable limit for permissible deviation, enabling efficient decision making when assessing a balance’s performance. As a compact, single mass in cylindrical and button form, it simplifies the verification workflow by allowing quick placement and minimal handling, reducing the time taken for periodic checks and helping maintain production throughput. Durable construction that withstands shop conditions Manufactured from painted cast iron, the test mass combines mechanical robustness with surface protection to resist everyday wear in an industrial setting. The material choice supports longevity under normal handling and reduces the risk of damage that can affect measurement uncertainty. The geometric design of the cylindrical form improves stability on weighing pans and minimises wobble, which contributes to consistent readings during short verification routines. Together, composition and shape translate into a practical tool that sustains reliable use without requiring specialised storage conditions. Practical handling and compliance-minded use The compact dimensions for the cylinder (39×28 mm) and a mass of 200 g make this weight easy to manoeuvre while still providing a useful reference point for a wide range of balances. The clear specification of 100 mg tolerance supports traceable verification procedures and documentation practices: when incorporated into routine checks, the single mass helps identify drift or load‑cell issues before they affect production quality. For teams less familiar with metrology terminology, the class designation indicates its intended application level—M3 class is typically used for workshop and industrial checks rather than precision laboratory calibration—so the right expectations can be set for its use. Integration into workshop processes and supplier reliability Selecting a standardised calibration mass manufactured in Germany supports predictable procurement and inventory planning. The straightforward design means no elaborate handling tools are required, and the single‑piece configuration reduces the chance of missing components during audits. When combined with a clear verification schedule, this test mass helps maintain measurement reliability across routine operations, supporting quality control and reducing downtime caused by uncertain weighing results. For specification guidance or to secure supply, contact Metav Werkzeuge in Emmerich — Metav’s specialists can confirm suitability for the intended balance and advise on stocking options via info@metav-werkzeuge.com or +49 2822 7131930 Technical data Article number: 366 SKU: 366-92 GTIN: 4045761012066 Manufacturer: KERN Origin: DE Facts Nominal value: 200 g Tolerance (OIML M3): 100 mg Weight (kg): 0.2 Cylinder dimensions: 39×28 mm Tariff code: 84239090 Special features Material: painted cast iron Form: button and cylindrical form OIML class: M3 Product group: single weight Made in Germany FAQ What does OIML class M3 mean for everyday use? OIML class M3 indicates suitability for routine workshop and industrial verifications; the KERN 366-92 calibration weight delivers a defined tolerance of 100 mg for such applications. Can this weight be used for laboratory calibration? The KERN 366-92 is designed for verification rather than high‑precision laboratory calibration; for precision labs, a higher OIML class would typically be required. How should the calibration weight be stored to preserve accuracy? Store the painted cast iron mass in a clean, dry place and avoid knocks or abrasive contact to maintain surface condition and measurement reliability for the KERN 366-92. Is the KERN 366-92 suitable for all types of balances? The 200 g nominal mass is appropriate for many workshop and industrial balances; confirmation against the balance’s capacity and readability is recommended before use. What documentation accompanies the weight for verification records? When supplied, the mass is identified by its SKU and class; for traceable calibration records, Metav Werkzeuge can advise on available certification and documentation options for the KERN 366-92 KERN, Germany, no direct manufacturer contact available
200 g Precision Calibration Weight Knob Polished Stainless Steel, OIML Class F1 - KERN
Take advantage of the combination of OIML Class F1 accuracy, polished stainless steel construction, and compact button form for reliable routine checks and traceable results; order directly via Metav Werkzeuge or ask our consultants for calibration options. KERN 327-08 Calibration Weight — 200 g, OIML Class F1, polished stainless steel The KERN 327-08 is a precision calibration weight designed for verification of analytical and industrial balances, offering traceable mass values in a compact button form. KERN calibration weight, OIML class F1 Nominal value 200 g with 1 mg tolerance Polished stainless steel, button form Compact cylinder 28×48.5 mm for easy handling Consistent metrology for reproducible results The OIML Class F1 specification ensures a high degree of accuracy for routine verification and adjustment tasks, with a declared tolerance of 1 mg for the 200 g nominal value. This class is widely accepted for laboratory and production environments where tight measurement reproducibility is essential. By using a certified calibration weight, systematic deviations in balances can be identified and corrected, improving process reliability and reducing the risk of costly rework or compliance issues. Traceability to national standards secures documented measurement quality for audits and quality management. Durable construction that supports long service life Manufactured from polished stainless steel, the weight resists corrosion and surface contamination, which helps maintain its nominal mass over time. The button form and compact cylinder dimensions make handling straightforward and reduce the risk of accidental contact with sensitive surfaces during use. A smooth, polished finish simplifies cleaning and minimises adsorption of contaminants that could alter mass. For workshops and laboratories seeking robust calibration artefacts, the combination of material quality and ergonomic form factor delivers dependable day-to-day performance. Practical calibration and storage guidance For long-term accuracy, professional calibration is recommended; DAkkS calibration is suggested as an equivalent and recognised option for most applications. Because regulatory provisions change, note that EG initial verification of calibration weights is not possible after 30.11.2025; selection of a suitable calibration route should reflect this. For transport and protection against mechanical damage, a dedicated protective case is strongly advised. Proper handling, periodic verification and secure storage together preserve measurement confidence and extend the useful life of the weight. Contact Metav Werkzeuge for DAkkS calibration options, ordering the KERN 327-08 and tailored advice from our precision experts at the Emmerich location Technical data Article number: 327 SKU: 327-08 GTIN: 4045761004788 Manufacturer: KERN Origin: DE Customs tariff no.: 84239090 Measurements Nominal value: 200 g Mass (kg): 0.2 Tolerance (OIML): 1 mg Cylinder dimensions: 28×48.5 mm OIML class: F1 EClass: 32120103 Materials & features Material: Polished stainless steel Form: Button form Recommended: Protective case for transport and storage Note: EG initial verification not possible from 30.11.2025 Calibration recommendation: DAkkS calibration FAQ What level of accuracy does this calibration weight provide? The KERN 327-08 is specified to OIML Class F1 with a tolerance of 1 mg for the 200 g nominal value, suitable for precise routine verifications. Is this weight suitable for laboratory balances and industrial use? Yes; the combination of OIML F1 specification and polished stainless steel construction makes it appropriate for both laboratory checks and industrial balance verification. How should the weight be stored and handled to retain accuracy? Store the weight in a protective case when not in use, avoid direct handling of measuring surfaces, and keep it free from dust and corrosive agents to preserve the nominal mass of the KERN 327-08. Is calibration required before first use? A professional calibration such as DAkkS calibration is recommended to document traceability and to ensure the weight meets required measurement standards for your application. Are there regulatory changes affecting initial verification of weights? Yes; note that EG initial verification of calibration weights is not possible from 30.11.2025. For most needs, the KERN 327-08 with DAkkS calibration will provide the necessary traceability and acceptance. KERN · Germany · Contact via Metav Werkzeuge: info@metav-werkzeuge.com · +49 2822 7131930
Ensure measurement reliability with certified test weights
Test weights are defined mass artefacts used to verify, adjust and document the performance of scales across production, laboratory and quality assurance environments. They provide the objective reference needed to confirm accuracy, repeatability and process reliability where documented results matter.
How test weights work and where they matter
Test weights serve as traceable references with fixed nominal values — for example 1 g, 100 g, 1 kg or 20 kg — and are manufactured to specific accuracy classes so that permitted deviations are known and comparable. In practice they are used to check a scale’s reading at one or several points within its range, to distinguish between calibration (checking and documenting deviation) and adjustment (setting the scale to read correctly). Typical situations include routine production checks, audit-prepared quality control, laboratory validation and fault-finding when instability, vibration or environmental factors affect readings.
Immediate performance gains for production and quality assurance
- increase measurement confidence by using weights matched to the application and scale resolution
- reduce downtime and troubleshooting time through systematic multi-point checks (lower, mid, upper range)
- protect process validity by choosing the correct accuracy class: E1, E2, F1, F2, M1, M2, M3
- limit handling-related error: use tweezers for small weights and clean gloves for larger items
- extend usable lifetime through disciplined storage in protective cases and regular control or recalibration
Why KERN & Sohn is the premium choice and how Metav supports you
KERN & Sohn brings a long heritage in precision weighing and measuring technology, offering extensive product ranges and services such as DAkkS-accredited calibration. Metav supplies these solutions with a practical focus: democratising precision by making traceable measuring tools available to workshops and specialist buyers across Europe. With over 48,000 customers, more than 250,000 products and a logistics and quality filter based in Emmerich, Metav combines specialist selection with dependable supply for industry and trade.
Technical data at a glance
- nominal values: 1 g, 100 g, 1 kg, 20 kg
- accuracy classes: E1, E2, F1, F2, M1, M2, M3
- typical applications: quality assurance; production; laboratory
- handling: tweezers for small weights; clean gloves for larger weights
- storage: protective case; dust-free environment
- check routine: lower, middle, upper range
- purpose: calibration (check & document); adjustment (set scale)
FAQ
What exactly are test weights?
Test weights are defined mass artefacts with fixed nominal values that are used to check, adjust or document scale performance within quality assurance and calibration workflows.
Which accuracy classes are available and when should I use them?
Accuracy classes range from E1/E2 for the highest demands, through F1/F2 for precise everyday applications, to M1–M3 for robust industrial or platform scales. Select the class that matches the required measurement uncertainty and the operating environment.
How often should I check my scale with test weights?
Frequency depends on the criticality of the process: critical operations often require daily or per-shift checks, while less critical applications may use weekly or monthly intervals; always check after location changes or suspect readings.
Why must test weights not be touched with bare hands?
Skin oils and moisture alter surface mass and can introduce measurable errors, especially for small nominal values. Use tweezers or clean gloves to maintain traceability and reliability.
What is the practical difference between calibration and adjustment when using test weights?
Calibration documents how far a scale deviates from the nominal value; adjustment actively corrects the scale to bring it back into tolerance. Both processes make use of test weights but serve different quality objectives.
Metav and KERN & Sohn provide the products, documentation and calibration pathways to integrate test weights into routine quality assurance — ensuring your measurements remain verifiable, repeatable and audit-ready.
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