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.
2 kg Precision Weight Set Wooden Padded Case, For Classes E1–F1 - KERN
Take advantage of a custom, padded wooden case that secures calibration weights up to 2 kg and supports classes E1 to F1 for efficient handling and long-term protection; order the bespoke version via Metav Werkzeuge or consult our advisors for layout and specification support. Wooden case for individual weight sets – padded, for E1–F1 (KERN) The Wooden case for individual weight sets is a padded wooden enclosure designed to hold calibration weights with nominal values up to 2 kg, suitable for weight classes E1 to F1 and compact/knob designs. Padded interior for safe storage Custom drilled and foam-lined layout Suited for calibration weights ≤ 2 kg Compatible with classes E1 to F1 Protecting calibration assets for reliable workflows The padded interior and tailored cavities of this case provide secure storage that reduces the risk of damage during handling and transport. By combining a padded interior with a bespoke layout, fragile mass standards remain stable and readily accessible, which contributes to reduced handling time and fewer recalibrations. This practical preservation supports consistent measurement results and streamlines routine calibration tasks in industrial and laboratory environments. Bespoke layout to match exact requirements KERN produces this custom-made enclosure to accommodate individual weight sets according to specified dimensions and mounting preferences. The case is supplied wooden, drilled and foam-lined to accept compact or knob-style weights, enabling a neat arrangement that reflects the actual set composition. This tailored approach minimises internal movement, simplifies inventory checks and supports efficient process integration for metrology routines. Compliance, durability and clear ordering information Constructed from solid timber and finished with a protective lining, the case meets the durability expectations of workshop use while remaining light enough for practical handling. It is designed specifically for calibration weights up to 2 kg and for classes E1 to F1, making it suitable for traceable measurement chains and high-accuracy applications. Please note that these universal cases are custom-made and non-returnable, a necessary condition for individually configured production to ensure precise fitting and quality. Contact Metav Werkzeuge in Emmerich for bespoke KERN wooden cases tailored to classes E1–F1 and nominal values up to 2 kg; our consultants will advise on layout, specifications and delivery options Technical data SKU: 315-070-100 Manufacturer: KERN GTIN: 4045761003378 Category: Calibration weights Country of origin: Germany Facts Case weight: 2.9 kg Suitable nominal weight: up to 2 kg Tariff number: 84239090 Special features Material: wood Interior: padded For weight classes: E1 to F1 For form factor: knob/compact Custom-made and non-returnable FAQ What nominal weights fit this case? The wooden case for individual weight sets (SKU 315-070-100) is designed for nominal values up to 2 kg and accommodates compact or knob-style pieces. Is the interior secured against movement and shocks? Yes, the KERN wooden case features a padded interior and foam-lined, drilled cavities that keep calibration weights stable during storage and transport. Can this case be returned if the layout is incorrect? No; these wooden cases are custom-made and non-returnable, as noted in the product specifications and ordering conditions. What material is used and who manufactures the case? The case is made of wood and is manufactured by KERN in Germany (SKU 315-070-100). Is the case suitable for high-accuracy weight classes? The design supports weight classes E1 to F1, making it appropriate for high-accuracy calibration sets used in professional metrology settings. KERN, Germany
2 kg Slotted Test Weight, OIML Class M1, Fine-Turned Stainless Steel, 100 mg Tolerance - KERN
Take advantage of precise OIML M1 calibration, a 2 kg nominal mass and a fine-turned stainless-steel finish for reliable, repeatable scale verification. Order the weight directly via Metav Werkzeuge or consult our technical advisors for compatibility and delivery from Emmerich. KERN 347-125 — Slotted calibration weight (Type A), OIML M1, 2 kg, fine-turned stainless steel KERN 347-125 is a slotted calibration weight designed for verification and routine calibration of laboratory and industrial scales, compatible with Type A carrier rods. OIML class M1 accuracy Nominal mass 2 kg Fine-turned stainless steel finish Compatible with Type A slotted carriers Confidence in measurement accuracy for everyday calibration The OIML M1 classification ensures that the mass standard meets internationally recognised accuracy limits, with a declared tolerance of 100 mg. This precision supports reliable adjustment and verification of commercial and industrial scales, promoting consistent readings and reducing measurement-related rework. The declared 2 kg nominal mass and the cylindrical dimensions (80 × 52 mm) make it suitable for a wide range of balances and floor scales where a Type A slotted weight is required. Robust construction reduces maintenance and handling time Made from stainless steel and produced by fine turning, the weight offers resistance against corrosion and surface wear, which contributes to long service life and stable mass values over repeated use. The slotted design (Type A) enables secure mounting on standard carrier rods without additional fixtures, simplifying calibration procedures in busy workshops and testing laboratories. This combination of material quality and practical form factor supports operational efficiency and lowers downtime. Traceability and practical use in the workshop or laboratory Marked and manufactured in Germany, the weight supports traceable calibration workflows when used as part of a documented measurement chain. Its compact cylindrical shape and slotted profile permit straightforward handling and storage in weighted sets or on calibration racks. The product is supplied as a single weight suitable for routine checks, verification of weighing instruments and inclusion in periodic internal audit procedures. Request availability and delivery from Metav Werkzeuge in Emmerich; our advisors can confirm compatibility with existing Type A carriers and provide technical details via info@metav-werkzeuge.com or by phone +49 2822 7131930 Technical data SKU: 347-125 Article number: 347 Manufacturer: KERN GTIN: 4045761256385 Country of origin: DE Tariff number: 84239090 Core specifications Nominal mass: 2 kg OIML class: M1 Declared tolerance: 100 mg Dimensions (cylinder): 80 × 52 mm Materials & features Material: finely turned stainless steel Design: slotted weight (Type A) Compatibility: compatible with all Type A slotted carriers Category: Calibration weights FAQ What accuracy class does this calibration weight meet? The KERN 347-125 meets OIML M1 accuracy requirements with a declared tolerance of 100 mg, suitable for verification of many laboratory and industrial scales. Is the weight suitable for use with standard carrier rods? Yes, the slotted design is specified as Type A and is compatible with all common Type A slotted carriers and support rods. What material is the weight made from and why does that matter? The weight is made from finely turned stainless steel, providing corrosion resistance and surface stability that help maintain mass values over time. Manufacturer: KERN — Address: Germany — Contact details: not provided
2 kg Test Weight Button Shape, OIML Class M2, Turned Stainless Steel - KERN
Take advantage of a compact, certified reference mass that combines OIML class M2 accuracy with a robust, fine-turned stainless steel finish for dependable balance verification; order directly via Metav Werkzeuge or contact our consultants for further guidance. KERN 357-12 calibration weight (OIML M2, 2 kg) The KERN 357-12 is a precision calibration weight designed for routine verification of laboratory and industrial balances, offering a knob shape for secure handling and a finely turned stainless-steel surface for durability. OIML M2 accuracy class 2 kg nominal value Fine-turned stainless steel Knob shape for secure handling Consistent measurement confidence for routine checks The OIML M2 rating provides a recognised benchmark for repeatable verification tasks, delivering consistent results when checking mid-range balances. The nominal 2 kg mass is suitable for a wide range of scales used in workshops, laboratories and quality-control stations. By using a certified reference mass that meets international class standards, operators gain a rational basis for corrective action and process control, reducing uncertainty in daily weighing routines. Durable construction that withstands regular use Machined from fine-turned stainless steel, this reference mass resists surface wear and environmental effects common in production environments. The knob shape simplifies placement and retrieval from balances, lowering the risk of finger contact with the mass surface and helping to maintain measurement integrity. Robust material choice and precision machining translate into lower maintenance demands and prolonged service life for calibration equipment. Practical handling and fit-for-purpose performance A compact, single reference mass is ideal for frequent verification cycles where space and handling efficiency matter. The design supports fast, repeatable application on pans and platforms without unnecessary adjustment, enabling a smoother workflow in busy metrology stations. Explanations of terminology: OIML class denotes the international accuracy category; nominal value refers to the declared mass used for comparison and adjustment of weighing instruments. Proven manufacturer quality and supply reliability Produced by KERN, a well-established name in metrology, this calibration mass aligns with industry expectations for material quality and manufacturing precision. Metav Werkzeuge acts as a dependable distribution partner, combining expert selection with a European quality-filter approach from Emmerich. This combination supports procurement strategies that demand traceable products and steady supply for production and inspection needs. Contact Metav Werkzeuge for tailored advice on integrating the KERN 357-12 into verification routines or to request further technical details directly from our team in Emmerich Technical data Article number: 357 SKU: 357-12 Manufacturer: KERN Facts Nominal weight: 2 kg Accuracy class: OIML M2 eCl@ss: 32120103 Special features Material: fine-turned stainless steel Form: knob shape Product group: single calibration weight Category: calibration weights FAQ What applications is this calibration weight suitable for? The KERN 357-12 calibration weight is suitable for routine verification and control of laboratory and industrial balances where an OIML M2 mass is appropriate. Does the mass require special handling to keep accuracy? Regular careful handling of the KERN 357-12, using the knob shape provided, helps protect the mass surface and preserve measurement accuracy. Can this weight be used for legal-for-trade adjustments? The KERN 357-12 conforms to OIML class M2; suitability for legal-for-trade use depends on local regulations and the specific application requirements. Manufacturer: KERN — Address: — Contact: —
2 kg Wooden Weight Case For Custom Weight Sets Unpadded, F2–M3 - KERN
Take advantage of precise organisation and bespoke configuration with a robust wooden case that accommodates weights from 1 mg–2 kg and supports classes F2 and M3; order or request advice through Metav Werkzeuge for a tailored solution. Combine durable wood construction, unpadded flexibility for custom inserts and reliable KERN manufacturing for consistent handling of precision weights. Holz-Etui 335-070-200 — Wooden case for individual precision weight sets, unpadded, KERN The Holz-Etui 335-070-200 is a wooden storage case designed to hold calibration and precision weights, optimised for laboratories, calibration services and specialist workshops where organised, secure storage of components up to 2 kg is required. Wooden case for weight sets F2 and M3 Fits weights 1 mg–2 kg Unpadded design for custom inserts Custom-made for individual weight configurations Organise calibration weights for efficient workflows The wooden case delivers a clear organisational benefit: a compact, recognisable storage solution that groups precision weights by nominal value and class, reducing handling time during calibration cycles. Constructed from wood, the case offers a stable internal environment that helps maintain the condition of weights intended for classes F2 and M3, while the unpadded interior allows the insertion of bespoke foam or compartments to protect delicate samples. This arrangement streamlines routine checks and minimises the risk of misplacement or cross-contamination between sets. Flexible layout for bespoke weight assortments Designed for completely individual weight sets, the case supports configurations from 1 mg–2 kg, suitable for both compact/button-style weights and larger pieces used in verification. The unpadded design is purposeful: it permits the production of tailored inserts and trays that reflect specific workshop needs, whether for transport, storage or reference use. For facilities that require unique combinations of nominal values, this flexibility ensures each set can be arranged for fast retrieval and clear labelling, delivering measurable time savings in repetitive tasks. Durable build for dependable handling and transport Made by KERN from solid wood, the case balances robustness with a conservative aesthetic appropriate for professional environments. The overall mass and construction provide protective support during movement between calibration benches or within storage cabinets. Where longevity and consistent handling are priorities, the wooden shell gives predictable mechanical protection while remaining compatible with custom internal fittings that cushion precise masses during handling and transit. Contact Metav Werkzeuge in Emmerich for tailored advice on KERN wooden cases and bespoke insert options — reach out via info@metav-werkzeuge.com or +49 2822 7131930 to discuss requirements and order the appropriate configuration Technical data Article number: 335-070-200 Manufacturer: KERN GTIN: 4045761006140 Origin: Germany Material: Wood Numbers / Core technical data Capacity range: 1 mg–2 kg Suitable weight classes: F2, M3 Product weight: 2.9 kg Tariff number: 84239090 Designs / Special features Unpadded interior for custom inserts For button/compact weight design Custom-made for individual weight sets Universal cases are special productions, non-returnable FAQ What nominal weight range fits this case? The Holz-Etui 335-070-200 accommodates nominal values from 1 mg up to 2 kg, covering common calibration ranges for small to medium masses. Which accuracy classes are supported? The case is specified for weights in classes F2 and M3, making it suitable for routine calibration and control sets used in workshops and laboratories. Is the interior padded for protection? No, the case is supplied unpadded so bespoke foam or compartment inserts can be fitted to match individual weight geometries and handling preferences. Can a customised layout be ordered? KERN produces the wooden case as a custom-made solution for individual weight configurations; please note that these universal cases are special productions and therefore excluded from return. Manufacturer: KERN, Germany
2 mg Calibration Weight Plate Stainless Steel Polished, OIML F2 ±0.06 mg - KERN
Take advantage of the combination of OIML class F2 accuracy, a 2 mg nominal value and a polished stainless steel plate to secure reproducible results with analytical balances; order via Metav Werkzeuge or request advice from our consultants for DAkkS calibration. KERN Milligram weight 338-02 — OIML F2, 2 mg, polished stainless steel The KERN Milligram weight 338-02 is a precision calibration weight in plate form, designed for use with analytical balances and laboratory calibration procedures. OIML class F2 accuracy Nominal value 2 mg Polished stainless steel plate Tolerance 0.06 mg Reliable traceability for high-precision balances The OIML class F2 rating and nominal value of 2 mg ensure a defined level of measurement uncertainty suitable for fine laboratory and quality-control tasks. With a declared tolerance 0.06 mg, this calibration weight supports consistent adjustment and verification of analytical balances, reducing measurement drift and improving process control. Choosing a certified weight with documented performance enables documented traceability and makes catalogue and audit processes more straightforward. A DAkkS calibration is recommended for many applications because it provides an accredited calibration certificate that documents traceability to national standards. Compact, robust design that reduces handling risk Constructed from stainless steel with a polished finish and delivered in a plate form, the item combines corrosion resistance with a compact footprint for secure placement on balance pans. The smooth surface minimises particulate adhesion and facilitates careful handling, while the low profile reduces the risk of accidental displacement during weighing. For storage and transport, a protective etui is recommended due to the small mass involved; the case reduces contamination and mechanical shock, preserving the long-term precision and repeatability of the weight. Compliance guidance and practical application advice Regulatory changes mean type approval under certain directives will change after 30.11.2025; for many laboratories the accredited alternative remains DAkkS. A DAkkS calibration certificate delivers documented measurement uncertainty and supports internal quality systems. The KERN 338-02 is primarily intended for routine balance checks, calibration intervals and reference procedures in metrology labs and quality departments. Handle with tweezers or gloves, store in a dry, stable environment and consider regular recalibration intervals tailored to usage frequency to uphold measurement confidence and compliance. Request a DAkkS calibration quote and technical advice for the KERN 338-02 from Metav Werkzeuge — shipped reliably from Emmerich; email info@metav-werkzeuge.com or call +49 2822 7131930 Technical data Article number: 338-02 Manufacturer: KERN SKU: 338-02 GTIN: 4045761240230 Facts Nominal value: 2 mg Tolerance (OIML): 0.06 mg OIML class: F2 Customs tariff number: 84239090 Special features Material: polished stainless steel Form: plate Origin: CN DAkkS calibration recommended Protective etui recommended FAQ What level of accuracy does this calibration weight provide? The KERN Milligram weight 338-02 meets OIML class F2 requirements with a nominal value of 2 mg and a declared tolerance of 0.06 mg, making it suitable for precise balance checks. Can this weight be used for routine calibration of analytical balances? Yes, the 2 mg plate is designed for verification and adjustment activities on analytical balances and for routine laboratory calibration tasks. Is a calibration certificate available for this weight? A DAkkS calibration certificate is recommended and can be provided for the KERN 338-02, delivering accredited traceability and documented measurement uncertainty. How should the weight be handled and stored to preserve accuracy? Handle the weight with tweezers or gloves, avoid fingerprints, and store it in a protective etui to prevent contamination and mechanical damage; these steps help maintain the declared tolerance. Does the manufacturer provide additional information on materials and origin? The weight is manufactured from polished stainless steel and the origin is listed as China; further technical enquiries can be clarified by Metav Werkzeuge. KERN · Origin: China · Contact: not provided
2 mg Precision Caliper Weight Disk, OIML F1, Stainless Steel Polished, 0.02 mg Tolerance - KERN
Take advantage of high micro‑scale accuracy and a corrosion‑resistant finish to secure repeatable calibration results; order directly via Metav Werkzeuge or contact our consultants for tailored calibration and handling advice. Milligram weight KERN 328-02 (OIML F1, 2 mg, polished stainless steel) The Milligram weight is a precision calibration disc for analytical and microbalance verification in laboratories and calibration services. OIML F1 accuracy for milligram calibration Nominal value 2 mg in disc form Polished stainless steel construction Tight tolerance 0.02 mg for high precision Exceptional accuracy for micro‑scale calibration Designed for tasks that demand reliable microgram stability, this weight meets OIML F1 requirements and is specified at 2 mg with a manufacturing tolerance of 0.02 mg. Such classification supports traceable adjustment and verification of analytical balances and high‑precision scales, ensuring measurement uncertainty is minimised in routine laboratory workflows. The defined tolerance and certification class provide a measurable basis for conformity assessments and internal quality control routines. Durable finish and compact form for consistent handling The disc‑shaped construction combines a polished stainless steel surface with a compact profile that reduces contamination and facilitates cleaning. The polished finish improves wear resistance and simplifies handling while the flat disc form assists stable placement on balance pans and repeatable centring. For transport and long‑term preservation of metrological properties, use of a protective storage case is strongly recommended to avoid abrasion and environmental influences. Traceability and calibration path for accredited environments For legal metrology and accredited testing, a DAkkS certificate is advised as the accepted route to traceability; the EC initial verification for weights will no longer be available after 30 November 2025. A formal DAkkS calibration provides documented measurement uncertainty and a traceable certificate suitable for interlaboratory comparison, audits and quality management systems. The KERN 328-02 is therefore suited to laboratories that require documented conformity and stable reference values for high‑precision weighing equipment. For procurement guidance, DAkkS calibration options or to arrange delivery of KERN milligram weights, contact Metav Werkzeuge in Emmerich for expert advice and handling recommendations via info@metav-werkzeuge.com or by phone on +49 2822 7131930 Technical data Article number: T328-A Manufacturer: KERN SKU: 328-02 GTIN: 4045761240322 Country of origin: CN Facts Nominal value: 2 mg Tolerance (OIML): 0.02 mg OIML class: F1 Commodity code: 84239090 Special features Material: stainless steel Form: disc (plättchen) Surface: polished Recommendation: protective storage case recommended Calibration advice: DAkkS calibration recommended Intended use: reference weight for analytical and micro balances FAQ What does OIML class F1 mean for calibration tasks? OIML class F1 denotes a high level of accuracy for reference weights used in calibration and verification of precision balances; the Milligram weight specified as OIML F1 is suitable for tight uncertainty requirements in laboratory environments. Can the KERN 328-02 be supplied with an accredited calibration certificate? Yes, the KERN 328-02 can be supplied with a DAkkS calibration certificate, which ensures traceability and documented measurement uncertainty suitable for accredited testing and quality systems. Is the material suitable for long‑term use in laboratory conditions? The polished stainless steel construction offers corrosion resistance and ease of cleaning, supporting long‑term stability when stored and handled according to good metrological practice. Is a storage case necessary for this weight? A protective storage case is strongly recommended to prevent abrasion and contamination; use of a case preserves the metrological properties and supports repeatable results. For which applications is this milligram weight intended? The weight is intended for calibration and verification of analytical, micro and precision balances in laboratories, research facilities and calibration workshops where low measurement uncertainty is required. Metav Werkzeuge, Emmerich am Rhein, Germany — info@metav-werkzeuge.com — +49 2822 7131930
2 mg Precision Weight Plate E2, Stainless Steel Polished, 0.006 mg Tolerance - KERN
Take advantage of pinpoint accuracy and robust stainless-steel construction — the OIML E2 classification and 0.006 mg tolerance ensure reliable micro-calibration results; order directly via Metav Werkzeuge or consult the team for tailored calibration options. Milligram weight 318-02 — OIML E2, 2 mg, stainless steel (KERN) The Milligram weight 318-02 is a polished stainless-steel disc designed for high-precision calibration of microbalances and analytical scales in laboratories and fine workshops OIML class E2 precision Polished stainless-steel disc 0.006 mg tolerance for micro-calibration Precise micro-calibration for reliable measurement chains The OIML E2 rating and 2 mg nominal value make this weight a suitable reference for the calibration of high-resolution balances. With a specified tolerance of 0.006 mg, the standard supports traceable adjustments and performance checks of microbalances used in quality control and research environments. The polished stainless steel construction reduces surface contamination and facilitates careful handling; the disc shape minimises footprint while offering stable seating on balance pans. Technical terms: OIML E2 indicates suitability for metrological tasks requiring tight uncertainty limits, while tolerance denotes the maximum permissible deviation from the nominal mass. Handling, compliance and calibration recommendations for safe use Due to the extreme accuracy of this class, a protective carrying case is recommended to prevent contamination and mechanical damage during transport and storage; a range of suitable cases is available under accessories. Note that EC initial approvals for calibration weights will no longer be possible after 30 November 2025; for most laboratory applications a DAkkS calibration is recommended and available as an equivalent traceable certificate. The weight's polished finish and compact disc form simplify cleaning and reduce handling-induced errors, supporting reproducible calibration routines in routine and specialist metrology tasks. Proven manufacturing and supplier assurance for routine workflows Manufactured by KERN, this milligram reference is intended for environments that demand consistent metrological quality. Combining the precise manufacturing tolerances with a recommended DAkkS certificate provides documented traceability for audits and quality records. As a supplier committed to democratising precision, Metav Werkzeuge offers access to this standard alongside calibration services and accessory recommendations, helping workshops and labs centralise procurement while maintaining rigorous quality assurance. The compact design and clear specification support efficient integration into existing calibration procedures. Contact Metav Werkzeuge in Emmerich for expert guidance on the KERN 318-02 milligram weight, DAkkS calibration options and recommended protective cases — email info@metav-werkzeuge.com or call +49 2822 7131930 Technical data SKU: 318-02 Article number: T318-A Manufacturer: KERN GTIN: 4045761240414 Nominal value: 2 mg Material: stainless steel Form: disc Facts OIML class: E2 Tolerance: 0.006 mg HS code: 84239090 eClass: 32120103 Origin: CN Special features Polished stainless-steel surface Disc shape for microbalances Milligramme reference for micro-calibration Protective case recommended due to high accuracy DAkkS calibration recommended EC initial approval not possible after 30.11.2025 FAQ What accuracy can be expected from this weight? The KERN 318-02 milligram weight meets OIML E2 specifications with a tolerance of 0.006 mg, suitable for precise micro-calibration tasks. Is a calibration certificate available for this weight? A DAkkS calibration is recommended for the 318-02 and is offered as a traceable certificate; note that EC initial approvals are not possible after 30 November 2025. What material and form does the reference have? The reference is a polished stainless-steel disc designed to sit stably on microbalance pans and to be cleaned and handled with minimal contamination risk. Which balances is this weight suitable for? This milligram reference is intended for microbalances and high-resolution analytical balances where sub-milligram accuracy checks are required. Is a protective case necessary for everyday use? Due to the very fine tolerance, a protective case is strongly recommended to avoid contamination and mechanical damage; Metav lists compatible cases in the accessories section. Manufacturer: KERN — Supplied via Metav Werkzeuge, Emmerich — Contact: info@metav-werkzeuge.com, +49 2822 7131930
2 mg Precision Weight Plated, OIML M1, Polished Stainless Steel, Disc 0.2 mg Tol. - KERN
Take advantage of the combination of OIML M1 accuracy, a polished stainless steel plate and compact plate geometry for reproducible micro‑calibrations. Order the weight directly via Metav Werkzeuge or contact our consultants for specifications and calibration options. KERN 348-02 milligram weight — OIML M1, 2 mg polished stainless steel plate The KERN 348-02 is a precision milligram weight in OIML M1 class designed for traceable calibration of analytical balances and high‑precision scales. OIML M1 tolerance 0.2 mg Nominal value 2 mg Polished stainless steel plate Compact plate form for micro‑calibration Consistent measurement accuracy for laboratory workflows The milligram weight is manufactured to OIML M1 requirements and a tolerance of 0.2 mg, which provides a reliable reference point for routine checks and adjustment procedures of analytical instruments. This level of specification supports reproducible results across shift changes and between instruments, reducing process variation. The nominal value of 2 mg is suited to fine‑range calibrations where small deviations can influence analytical outcomes; using a dedicated reference weight helps maintain instrument performance and supports quality documentation. Robust materials and handling that protect the reference value A polished stainless steel surface and flat plate form minimise contamination and facilitate careful handling during placement on balance pans. The corrosion‑resistant finish preserves mass stability in laboratory environments, while the compact geometry simplifies centring on small balance pans and minimises convection effects during weighing. These design aspects contribute to lower risk of surface damage and ensure the reference value remains stable between calibrations. Calibration pathway and regulatory note for traceability From 30 November 2025, EC initial verification of test weights will no longer be possible; therefore a DAkkS calibration is recommended for continued traceability and documented accuracy. A DAkkS certificate links the reference weight to national standards and supports audit requirements in regulated laboratories and quality control departments. For tasks requiring documented conformity and long‑term reproducibility, a calibration from an accredited laboratory ensures the weight integrates seamlessly into a calibration interval plan. For product availability, calibration options and delivery from our Emmerich warehouse, contact Metav Werkzeuge for tailored advice on the KERN 348-02 and associated DAkkS services Technical data Article number: 348-02 Manufacturer: KERN SKU: 348-02 GTIN: 4045761240148 Core specifications Nominal value: 2 mg OIML class: M1 Tolerance: 0.2 mg Customs tariff number: 84239090 Materials and features Material: Polished stainless steel Form: Plate (Plättchenform) Segment: Test weights / calibration weights Origin: CN FAQ What level of accuracy does this weight provide? The KERN 348-02 milligram weight meets OIML M1 requirements with a tolerance of 0.2 mg, making it suitable for routine checks and fine‑range calibrations on analytical balances. Is a DAkkS certificate recommended for this weight? Yes. A DAkkS calibration is recommended for the KERN 348-02 to ensure traceability to national standards and to support formal quality documentation. How should the weight be handled and stored? Handle the polished stainless steel plate with clean gloves or tweezers and store it in a dust‑free box to protect the surface and maintain the reference mass; the compact plate form facilitates careful placement on small pans. Can the weight be used for routine in‑house verifications? The 2 mg nominal mass is intended for routine in‑house verifications of fine‑range balances; for audit‑grade or regulatory tasks, combine regular checks with accredited DAkkS calibrations. Metav Werkzeuge, Emmerich am Rhein — Email: info@metav-werkzeuge.com — Tel: +49 2822 7131930 — WhatsApp: +49 170 2837271
2 mg Precision Wire Mass E1 Class, Polished Stainless Steel, 0.003 mg Tolerance - KERN
Take advantage of the combination of high metrological accuracy, compact wire‑form design and durable polished stainless steel for reliable calibration routines; order the weight directly via Metav Werkzeuge or consult our specialists for assistance. KERN 308-32 milligram calibration weight — 2 mg, OIML E1, polished stainless steel (wire form) The KERN 308-32 milligram weight is a precision reference mass in wire form, designed for the calibration of analytical balances and microbalances in laboratories and quality control environments. OIML class E1 precision Nominal value 2 mg Polished stainless steel wire form Recommended storage in protective case Highest-class accuracy for traceable calibrations The wire‑form reference mass delivers OIML E1 accuracy at a nominal value of 2 mg, with an OIML tolerance of 0.003 mg. This level of conformity is intended for laboratories and calibration houses that require the smallest measurement uncertainty for routine checks and for establishing traceability to national standards. The specified tolerance indicates the maximum permissible deviation for the class and helps technicians evaluate measurement uncertainty in a straightforward, standardised way. Durable design and careful handling reduce measurement uncertainty Manufactured from polished stainless steel and shaped in a fine wire form, this reference mass minimises surface contact and contamination while offering a robust surface finish that resists corrosion. The slender profile is optimised for use with microbalance pans and draft‑shielded enclosures. For handling, the use of tweezers and lint‑free gloves is recommended to avoid oils and particles; a protective case is strongly advised to preserve calibration status and to prevent mechanical damage during storage and transport. Practical application and storage guidance for reliable results Intended for use with analytical balances and microbalances, the reference mass supports routine verification and adjustment procedures where milligram‑level accuracy is required. Storage in a stable, low‑humidity environment reduces mass drift; periodic checks against a traceable standard are recommended to confirm ongoing performance. The product is produced in Germany and is supplied with clear identification for inventory control and calibration records, facilitating compliance with laboratory quality systems and audit requirements. Contact Metav Werkzeuge in Emmerich for expert advice on selecting the correct protective case and to arrange supply of the KERN 308-32 milligram calibration weight — email info@metav-werkzeuge.com or call +49 2822 7131930 Technical Data Article number: 308 SKU: 308-32 Manufacturer: KERN GTIN: 4045761002944 Core technical data Nominal value: 2 mg OIML class: E1 OIML tolerance: 0.003 mg eCl@ss: 32120103 Tariff code: 84239090 Special features Material: stainless steel Form: wire form Finish: polished Origin: Germany Recommended accessory: protective case (etui) FAQ What does OIML E1 classification mean for calibration use? OIML E1 denotes one of the highest international classes for calibration weights; the KERN 308-32 conforms to this class and therefore provides very low permissible deviation suitable for calibrating high‑precision balances. Can this reference mass be used with microbalances? Yes, the compact wire form and 2 mg nominal value make the weight suitable for microbalances and analytical balances when following proper handling and environmental controls. How should the weight be handled and cleaned? Handle the weight with tweezers or gloved hands to avoid contamination. Clean gently with a lint‑free cloth; avoid solvents and abrasive actions that could alter the polished surface and affect mass. Is a protective case necessary for storage and transport? For this accuracy class the use of a protective case is strongly recommended to maintain calibration status and to prevent mechanical damage and contamination. Metav Werkzeuge, Emmerich am Rhein, Germany — Email: info@metav-werkzeuge.com — Tel: +49 2822 7131930 — WhatsApp: +49 170 2837271
20 g Calibration Weight Eco Form Stainless Steel Polished, OIML F1 0.25 mg - KERN
The compact 20 g reference mass with OIML F1 accuracy and a polished stainless steel finish provides reliable, repeatable calibration for balances and scales; the Eco-Form outline and small footprint simplify handling and storage. Order the calibration weight directly via Metav Werkzeuge or ask our consultants if needed. KERN 326-05 calibration weight — 20 g, OIML F1, polished stainless steel A KERN 326-05 single calibration weight designed for precise verification of laboratory and industrial balances and scales. OIML class F1 accuracy 0.25 mg tolerance Nominal mass 20 g in Eco-Form Polished stainless steel construction Compact dimensions 13×22 mm Ensured measurement reliability for routine calibrations The OIML F1 classification with a declared tolerance of 0.25 mg gives a solid, rational basis for routine verification and internal calibration programmes. Using a defined reference mass reduces uncertainty in measurement results and supports conformity checks for precision balances. Where traceable comparative checks are required, a dedicated test mass of this specification helps to maintain consistent process control and reduces the need for repeated adjustments. Robust finish and user-oriented shape for reduced handling error Manufactured in polished stainless steel, the weight resists corrosion and is straightforward to clean after use, extending service life in everyday workshop and laboratory environments. The Eco-Form profile minimises contact area during handling, which lowers the risk of contamination or oil transfer from fingers and helps to preserve the nominal mass. With compact physical dimensions of 13×22 mm, the reference piece integrates easily into existing weight sets or storage trays without occupying excessive space. Compact solution that streamlines verification workflows As a single calibration mass, the reference weight is suited for quick checks and regular verification cycles where a 20 g nominal value is required. The small footprint and durable finish allow efficient storage and frequent use without complex maintenance routines. For facilities balancing throughput and precision, this test mass supports faster routine checks while maintaining the metrological quality expected from a precision manufacturer. For rapid availability and technical guidance on the KERN 326-05 calibration weight, contact Metav Werkzeuge in Emmerich — email info@metav-werkzeuge.com or call +49 2822 7131930 for expert advice and local dispatch. Technical data Article number: 326 SKU: 326-05 GTIN: 4045761223707 Manufacturer: KERN Country of origin: DE Key measurements Nominal mass: 20 g Mass in kg: 0.02 kg Tolerance (OIML F1): 0.25 mg Dimensions (cylinder): 13×22 mm Features and materials Material: polished stainless steel Form: Eco-Form OIML class: F1 Product group: single weights Tariff number: 84239090 FAQ What accuracy class does this reference mass meet? The calibration weight meets OIML F1 standards with a declared tolerance of 0.25 mg, suitable for precise routine verifications. What is the nominal mass and physical size of the weight? The nominal mass is 20 g and the compact cylinder measures 13×22 mm, making it easy to handle and store. Which material and finish are used for this weight? The mass is made of polished stainless steel, providing corrosion resistance and simple cleaning after repeated use. Is this single weight suitable for industrial and laboratory balances? Yes — the 20 g reference mass is intended for verification of both laboratory and industrial balances where an OIML F1 class test weight is appropriate. Who supplies this calibration weight and where can it be ordered? The weight is supplied by KERN and is available through Metav Werkzeuge; Metav can advise on suitability and availability for specific calibration routines. KERN, Germany
20 g Calibration Weight Hook Stainless Steel Fine-Turned, OIML Class M1 ±2.5 mg - KERN
Take advantage of the combination of OIML M1 accuracy, a fine-turned stainless steel finish and a practical hook design for reliable, repeatable scale checks; order the weight directly through Metav Werkzeuge or contact our consultants for tailored advice. KERN 347-056 Hook Calibration Weight — 20 g, OIML M1, Stainless Steel KERN 347-056 is a hook calibration weight designed for routine balance and scale checks in workshops and laboratories, offering OIML M1 class accuracy in a compact suspension format. OIML M1 class accuracy Fine-turned stainless steel finish Nominal mass 20 g for precise checks Hook suspension for direct weighing Consistent accuracy for routine calibrations The OIML M1 classification and a specified tolerance of 2.5 mg make this weight a dependable choice for recurring verification tasks. As a single calibration weight, it reduces uncertainty when checking small-capacity scales and analytical balances: the defined tolerance gives a clear quantitative basis for pass/fail decisions during daily or shift-based checks. The compact 20 g nominal mass and low mass drift support predictable instrument behaviour, allowing quality managers to plan maintenance intervals with confidence. Robust finish that stands up to daily handling Manufactured from fine-turned stainless steel, the weight resists corrosion and surface damage from repeated handling and routine cleaning. The turned surface not only provides a clean aesthetic but also reduces contamination risks and wear on the suspension point. For users who value longevity and low-maintenance equipment, this finish minimises the need for replacements and preserves measurement stability over time, which is especially important in production environments where frequent checks are required. Practical suspension design for fast checks The hook configuration enables direct suspension from scale pans or fixtures, speeding up in-situ verification and reducing handling steps compared with clamped or box-mounted weights. This design simplifies workflows when performing comparative checks across multiple instruments, helping to streamline calibration protocols. As a single, purpose-built hook weight, it integrates easily into existing test procedures and supports efficient traceable checking without additional adapters. Contact Metav Werkzeuge for expert advice on integrating the KERN 347-056 into calibration routines and to arrange prompt supply from Emmerich. Technical data Article number: 347 SKU: 347-056 GTIN: 4045761256194 Manufacturer: KERN Country of origin: Germany Material: Fine-turned stainless steel OIML class: M1 Facts Nominal mass: 20 g Mass (kg): 0.02 kg Tolerance (OIML M1): 2.5 mg Cylinder dimensions: 13 × 30 mm Tariff number: 84239090 Special features Hook suspension design for direct weighing Single calibration weight (not a set) Fine-turned surface finish Intended for balance and scale verification FAQ What level of accuracy does this weight provide? The KERN 347-056 hook calibration weight meets OIML M1 requirements, corresponding to a tolerance of 2.5 mg for the 20 g nominal mass. Can this weight be used directly on small balances? Yes, the hook suspension enables direct use with pans or suspension fixtures commonly found on small balances and compact scales for verification purposes. What material is the weight made from and why does it matter? The weight is made from fine-turned stainless steel, which resists corrosion, maintains surface integrity and supports long-term measurement stability. Is the KERN 347-056 supplied as part of a set? This item is sold as a single calibration weight, intended for individual checks rather than as a component of a matched set. What dimensions should be considered when planning storage or fixtures? The cylindrical body measures 13 × 30 mm, a compact footprint suited to standard suspension fixtures and small storage compartments. KERN — Germany — contact details not provided
20 g Precision Calibration Weight Button Shape Polished Stainless Steel OIML E1, 0.025 mg Tolerance - KERN
Take advantage of the combination of OIML E1 accuracy, polished stainless-steel durability and compact handling to ensure reliable scale verification in high-precision environments. Order this calibration weight directly via Metav Werkzeuge or ask our consultants for advice on the correct protective case. KERN 307-05 — 20 g OIML E1 calibration weight, polished stainless steel A KERN 307-05 reference mass in button form for traceable verification of high-precision balances and laboratory scales OIML Class E1 certified accuracy Polished stainless steel for long-term stability Compact button form for safe placement on balances Engineered accuracy for traceable results The core benefit of this reference mass is its OIML E1 classification, which guarantees a very low maximum permissible error of 0.025 mg. Such precision is essential when verifying analytical balances and high-resolution scales, as it maintains measurement confidence and reduces uncertainty in documented calibration procedures. The nominal mass of 20 g makes the item suitable as a mid-range calibration point for many laboratory and quality-control routines, supporting compliance with internal protocols and external audit requirements. Durable design that supports repeated use Constructed from polished stainless steel, the weight resists corrosion and surface degradation, which preserves its metrological properties over time. The button form and compact dimensions (13×22 mm) enable safe, repeatable placement on pans and reduce the risk of accidental contact. The smooth finish facilitates gentle cleaning without abrasive treatment, so the reference mass stays within tolerance while remaining easy to handle during daily verification tasks. Practical integration into calibration workflows This verification weight is manufactured by KERN and is designed for use in calibration laboratories, production quality departments and service centres that require reproducible reference points. For optimal longevity and to avoid contamination, a protective case is recommended for transport and storage; Metav Werkzeuge can advise on suitable etui options. Selecting a certified reference mass like this one contributes to demonstrable traceability chains and helps streamline internal quality assurance procedures. For traceable calibrations and tailored accessory advice, contact Metav Werkzeuge to order the KERN 307-05 or to discuss the right protective case and delivery options – eMail: info@metav-werkzeuge.com / Tel: +49 2822 7131930 Technical data SKU: 307-05 Article number: 307 Manufacturer: KERN Origin: DE GTIN: 4045761002708 Facts Nominal mass: 20 g Mass in kg: 0.02 kg Tolerance (OIML E1): 0.025 mg Dimensions (cylinder): 13×22 mm Tariff code: 84239090 eClass: 32120103 Special features Material: polished stainless steel Form: button form OIML class: E1 Recommended accessory: protective case (etui) FAQ What does OIML E1 mean for laboratory use? OIML E1 denotes the highest common accuracy class for calibration masses; the KERN 307-05 meets these strict tolerances, making it appropriate for the most demanding laboratory verifications. Can this weight be used on analytical and semi-micro balances? Yes, the 20 g reference mass is suitable as a verification point for many analytical and semi-micro balances where a 20 g nominal mass is required and an E1 class standard is specified. How should the mass be stored to maintain accuracy? Store the reference mass in a clean, dry protective case and avoid direct handling of the measuring surface; Metav Werkzeuge recommends an etui for transport and storage to preserve the KERN 307-05’s tolerance. Is the surface finish important for calibration weights? Yes. The polished stainless-steel finish reduces corrosion and surface deposits, preserving the mass value and making gentle cleaning straightforward for repeated calibration cycles. Are there recommendations for cleaning and handling? Handle with tweezers or gloves to avoid fingerprints; clean with a soft, lint-free cloth and avoid abrasive cleaners to maintain the calibrated surface and the long-term stability of the verification mass. KERN — origin: DE
20 g Precision Calibration Weight Knob Polished Stainless Steel, OIML F1, 0.25 mg Tolerance - KERN
Precise, compact and corrosion‑resistant: the polished stainless‑steel button design together with OIML F1 accuracy and a nominal value of 20 g provides a dependable reference mass for routine checks and quality control. Order via Metav Werkzeuge or consult our specialists for calibration and accessory recommendations. KERN 327-05 — Calibration weight, OIML F1, 20 g, polished stainless steel The KERN 327-05 is a 20 g OIML F1 calibration weight in button form, intended for precision balances and laboratory verification tasks. OIML class F1 accuracy Nominal mass 20 g Polished stainless steel finish Tight tolerance 0.25 mg Consistent reference mass for quality control The polished, compact reference mass offers repeatable accuracy when verifying analytical and precision balances. Classified as OIML F1, the mass carries a nominal value of 20 g with a tolerance of 0.25 mg, which translates to very small permissible deviation and supports tight measurement routines. This level of precision reduces uncertainty during routine checks and helps maintain conformity with internal quality procedures; the specification is suitable for laboratories and production environments that require reliable, traceable reference masses for calibration intervals and acceptance testing. Robust finish and ergonomic shape for reliable handling Manufactured from polished stainless steel, the button‑shaped design resists corrosion and is easy to clean, reducing the risk of contamination that can affect mass readings. The compact form improves handling and placement on balance pans, while the smooth finish minimises particle adhesion and eases decontamination. These material and design choices extend service life and reduce maintenance effort, resulting in lower total cost of ownership and fewer interruptions to weighing processes over time. Traceability, calibration and storage guidance for audits For documented traceability and audit readiness, a recognised calibration certificate is recommended; after 30 November 2025 initial EC verification of weights will no longer be available, so a DAkkS calibration is advised for most laboratory and official applications. A protective case is recommended for this accuracy class to prevent damage and preserve measurement stability during transport and storage. The combination of documented calibration, careful storage and routine checks ensures measurement integrity across internal controls and external inspections. Contact Metav Werkzeuge for tailored advice on the KERN 327-05 — request DAkkS calibration options or case recommendations via info@metav-werkzeuge.com or call +49 2822 7131930 Technical Data Article number: 327 SKU: 327-05 GTIN: 4045761004726 Manufacturer: KERN Origin: Germany Data Nominal value: 20 g Mass: 0.02 kg Tolerance (OIML): 0.25 mg OIML class: F1 Tariff number: 84239090 Special features Material: polished stainless steel Shape: button form Recommended: protective case for high‑accuracy class Recommended calibration: DAkkS calibration FAQ What accuracy class does this calibration weight meet? The KERN 327-05 is specified to OIML F1, making it suitable for precision balance checks where a tolerance of 0.25 mg is required. Is the 20 g weight suitable for analytical balances? Yes, the 20 g nominal mass is appropriate as a reference for many analytical and precision balances when used in accordance with the balance manufacturer’s guidance. Can this weight be used for legal verification? EC initial verification of calibration weights will not be available after 30 November 2025; therefore, for legally required traceability most users will prefer a DAkkS calibration, which is recommended for the KERN 327-05. How should the weight be stored to maintain accuracy? Store the mass in a protective case and handle with gloves or tweezers to avoid oils and abrasion. A case is recommended for this accuracy class to prevent damage and preserve calibration stability. Is a calibration certificate available for this product? A calibration certificate from an accredited laboratory (for example DAkkS) is recommended for documented traceability and can be arranged for the KERN 327-05. KERN · Germany · Contact not specified
20 g Precision Test Weight Button Stainless Steel Polished, OIML Class E2 Tolerance 0.08 mg - KERN
Take advantage of exact OIML E2 accuracy paired with a polished stainless steel button design for reliable balance calibration; order directly via Metav Werkzeuge or consult our specialists for DAkkS calibration and protective cases. KERN 317-05 Single Weight (OIML E2) — 20 g polished stainless steel button The 317-05 is a precision single weight designed for routine calibration of laboratory and industrial balances, offering stable performance for traceable mass determinations OIML class E2 certified Nominal value 20 g Tolerance ±0.08 mg Polished stainless steel button form Secure measurement certainty for analytical balances The calibrated nature of this weight ensures repeatable results when verifying or adjusting sensitive weighing instruments. With OIML E2 classification and a declared tolerance of 0.08 mg, the item supports high-accuracy checks on analytical and precision balances where small deviations matter. This level of specification reduces uncertainty in processes that depend on accurate mass values, supporting quality control and compliance in laboratory and production settings. The emphasis here is on measurable reliability rather than subjective claims. Robust construction that simplifies everyday use Constructed from polished stainless steel, the compact button shape minimises handling contact and surface damage during transfer and storage. The finish resists corrosion and is easy to clean, which helps maintain long-term stability. The design balances durability with tactile handling: the small, rounded form is quick to position on pans while limiting the risk of contamination from fingerprints. For workshops and calibration labs, this translates into less downtime and fewer repeat checks. Handling, traceability and calibration guidance The nominal mass is clearly defined and suitable for traceable verification routines. For tasks requiring official traceability, a DAkkS calibration is recommended as an equivalent to the previous EC-type approvals, ensuring acceptance in many regulated applications. Due to the fine tolerance class, a protective case (etui) is advised to avoid abrasion or damage during transport and storage. The compact dimensions are compatible with standard weight sets and allow straightforward integration into calibration schedules without special fixtures. Where this weight performs best and how to care for it Designed for use in laboratories, testing facilities and workshops, the weight is ideal for verifying analytical balances and for spot checks in quality assurance workflows. Regular cleaning with lint-free cloths and avoiding aggressive chemicals will preserve the polished surface and measurement stability. For long-term traceability, schedule periodic recalibration according to internal quality procedures or when the weight has been subject to mechanical stress. Manufactured in Germany and supplied as a singular precision test mass, it provides consistent performance for metrological tasks. For advice on DAkkS calibration, protective cases and delivery from our Emmerich warehouse, contact Metav Werkzeuge by e‑mail at info@metav-werkzeuge.com or by phone at +49 2822 7131930 — our specialists will recommend the best configuration for your application Technical data Article number: 317-05 Manufacturer: KERN GTIN: 4045761003606 Origin: DE Tariff code: 84239090 Facts Nominal mass: 20 g Mass (kg): 0.02 kg Tolerance: 0.08 mg Dimensions (button): 13×22 mm OIML class: E2 Special features Material: polished stainless steel Form: button form Recommended: use protective case (etui) Calibration recommendation: DAkkS calibration suggested Manufacturer reference: KERN 317-05 FAQ What accuracy class does this test weight belong to? The KERN 317-05 is specified to OIML class E2, which suits high-precision verification tasks and supports reliable calibration routines. Is a protective case necessary for this single weight? Because of the fine tolerance, a protective case (etui) is recommended to prevent surface damage and maintain the declared accuracy during storage and transport. Can this weight be used for routine checks in a workshop environment? Yes — the polished stainless steel construction and compact button design make the weight suitable for routine checks on sensitive balances in both laboratory and workshop settings. What calibration is recommended for traceability? A DAkkS calibration is advised as an appropriate traceable certification path now that EC-type approvals are no longer available for many weight classes. How should the weight be cleaned and stored? Clean with a lint-free cloth and avoid abrasive or aggressive chemical cleaners; store in a protective case to preserve the polished surface and measurement stability. Manufacturer: KERN, Germany — GTIN: 4045761003606
20 g Precision Test Weight Compact Form Polished Stainless Steel, OIML E2 ±0.08 mg - KERN
Take advantage of a high-stability, certified mass standard with a 20 g nominal value and OIML E2 accuracy; the compact, polished stainless-steel design keeps handling and storage simple while supporting compliant calibration routines. Order directly via Metav Werkzeuge or contact our consultants for tailored advice. KERN 316-05 — Calibration weight, 20 g, OIML E2, polished stainless steel KERN 316-05 is a precision calibration weight in compact form for routine verification and adjustment of laboratory and industrial balances. Calibration weight class E2, 20 g Polished stainless steel for corrosion resistance Compact form 13×20 mm cylinder Tolerance 0.08 mg for high-precision checks Accuracy that keeps measurement processes compliant The OIML E2 classification and a declared tolerance of 0.08 mg make this mass standard suitable where low measurement uncertainty is required. For legal metrology checks, quality assurance and laboratory verification, the declared limits provide a clear numerical basis to evaluate balance performance. The combination of a small nominal mass and precise tolerance reduces drift-related correction needs and supports traceable measurement procedures, improving process reliability and audit readiness. Compact shape for safe handling and repeatable results Thanks to its compact form and the cylinder dimensions of 13×20 mm, the weight occupies minimal bench space and is easy to place on balances with restricted pan area. The polished stainless steel finish offers corrosion resistance and simplifies cleaning, which helps maintain long-term stability of the nominal mass. A compact, robust geometry minimises handling errors and contributes to reproducible results during routine checks and comparative tests. Built to integrate into calibration workflows This single-piece mass standard is designed for straightforward integration into existing calibration routines: it is ideal for balance checks, routine verification and documentation of measurement uncertainty. For secure storage and to protect the specification, a purpose-made case is recommended. Metav Werkzeuge supplies the weight with the backing of a European quality filter and can advise on suitable accessories and handling procedures to preserve the instrument’s accuracy over time. Certified manufacture and traceability for quality systems Produced by a recognised manufacturer with origin in Germany, the weight meets the expectations of laboratories and workshops that require certified reference masses. Using a certified 20 g standard reduces systematic error in small-mass applications and supports conformity with internal quality control or external accreditation requirements. The compact, polished mass standard thus becomes a reliable component in maintenance of measurement quality and regulatory compliance. For precise calibration equipment such as the KERN 316-05, contact Metav Werkzeuge in Emmerich for specific advice and to secure supply through our tested distribution channel Technical data Article number: 316 SKU: 316-05 GTIN: 4045761094871 Manufacturer: KERN Country of origin: Germany Core specifications Nominal mass: 20 g Mass in kg: 0.02 kg OIML class: E2 Tolerance: 0.08 mg Dimensions (cylinder): 13×20 mm Tariff number: 84239090 Materials & features Polished stainless steel Compact form Category: Calibration weights / Single weight Recommended accessory: protective case FAQ What accuracy class is this mass standard and what does it mean for calibrations? The weight is class OIML E2, which indicates tight tolerances suitable for laboratory-scale verifications and low-uncertainty applications; the KERN 316-05 with its 0.08 mg tolerance supports precise performance checks. Can this weight be used on small analytical balances? Yes, with a nominal value of 20 g and a compact 13×20 mm form, the weight is appropriate for analytical and precision balances with limited pan area; ensure balance capacity and readability suit the test procedure. How should the weight be stored and handled to retain accuracy? Handle the polished stainless-steel weight with clean gloves or tweezers and store it in a dedicated protective case to avoid contamination or surface damage; Metav recommends using an etui for long-term preservation of specification. Is the KERN 316-05 suitable for traceable quality systems? Yes, the certified OIML E2 classification and manufacturer documentation make the weight suitable for traceable checks within quality management and calibration schemes when used according to recognised procedures. Does the weight come with calibration or certification? Certification specifics are not listed here; for traceable certificates or calibration options for the KERN 316-05, consult Metav Werkzeuge for available documentation and services. KERN, Germany — contact details not provided
20 g Precision Test Weight Knob Form, OIML Class F2, Stainless Steel Turned, 0.8 mg Tolerance - KERN
Take advantage of the precise measurement class, robust stainless finish and compact knob design for reliable, repeatable scale verification. Order the calibration weight directly via Metav Werkzeuge or consult our specialists for tailored advice. KERN 337-05 — 20 g OIML F2 single calibration weight, finely turned stainless steel A KERN 337-05 single calibration weight for laboratory and industrial scale verification, designed for exact routine checks and instrument validation OIML Class F2 accuracy Nominal value 20 g Finely turned stainless steel Knob shape for easy handling Precision where conformity delivers measurable confidence The OIML Class F2 specification ensures this calibration mass meets stringent international tolerances for laboratory and industrial verification. With a nominal value of 20 g and a certified tolerance of 0.8 mg, the weight supports accurate adjustments and comparative checks on analytical and precision balances. The defined tolerance translates to predictable measurement uncertainty in calibration procedures, helping to maintain documented performance and compliance in quality systems. The compact dimensions facilitate use in confined calibration stations without compromising on metrological reliability. Durable finish and ergonomic handling for consistent results Machined from finely turned stainless steel, the mass resists corrosion and surface wear that could alter its nominal value over time. The knob shape is engineered to simplify handling with tweezers or gloved fingers, reducing contact-induced contamination and thermal transfer that can bias readings. The robust finish combined with the ergonomic form contributes to long service life and fewer re-certifications, supporting uninterrupted production and inspection workflows where repeatable handling and surface integrity matter. Ready for integration into traceable calibration workflows The single calibration mass is supplied as an individual verification weight ideal for routine checks, reference comparisons and adjustment sequences. Its compact cylinder format (13 × 23.5 mm) and clear identification via SKU and GTIN support inventory control and traceability within a laboratory management system. Due to the high accuracy class, a protective storage case is strongly recommended to prevent damage and preserve metrological characteristics; specialised cases are available in the accessories section to complete a practical calibration kit. Contact Metav Werkzeuge in Emmerich for guidance on selecting the right calibration accessories or to request a formal quotation for the KERN 337-05; our specialists will advise on traceability and storage solutions. Technical Data Article number: 337 SKU: 337-05 GTIN: 4045761006362 Manufacturer: KERN Origin country: DE Customs tariff number: 84239090 Facts Nominal value: 20 g Weight (kg): 0.02 Tolerance (OIML F2): 0.8 mg Dimensions (diameter × height): 13 × 23.5 mm OIML class: F2 Special features Single weight (individual calibration mass) Material: finely turned stainless steel Form: knob shape for safe handling Recommended: storage case due to high accuracy FAQ What accuracy class does this calibration weight have? The KERN 337-05 is specified as OIML Class F2, offering a tolerance of 0.8 mg for its 20 g nominal value, suitable for routine verification of precision balances. Is the material suitable for long-term use in laboratory environments? Yes, the mass is made from finely turned stainless steel, which provides good corrosion resistance and surface stability for extended use when stored and handled correctly. What are the dimensions and how compact is the weight? The cylinder measures 13 × 23.5 mm (diameter × height), making the mass compact enough for standard calibration stations and easy storage in a protective case. Should the weight be stored in a case between uses? Due to the high accuracy class of the KERN 337-05, a protective case is recommended to avoid surface damage and to maintain the stated metrological tolerance. Can this weight be used for routine calibration and adjustment of analytical balances? Yes, the single calibration mass is intended for routine checks, adjustments and comparative verifications on analytical and precision balances where OIML F2 accuracy meets the application requirements. Metav Werkzeuge, Emmerich am Rhein, Germany | info@metav-werkzeuge.com | +49 2822 7131930
20 g Slotted Test Weight, OIML Class M1, Fine-Turned Stainless Steel, 2.5 mg Tolerance - KERN
Take advantage of precise OIML M1 classification combined with a fine-turned stainless-steel finish and compact slit design for reliable routine calibrations; order directly via Metav Werkzeuge or consult our specialists for application advice. KERN 347-055 — Slit calibration weight, OIML M1, 20 g, fine-turned stainless steel The KERN 347-055 is a Type A slit calibration weight designed for traceable verification of laboratory and workshop balances, offering compatibility with standard slit carriers and compact handling. OIML class M1 accuracy Nominal mass 20 g with 2.5 mg tolerance Fine-turned stainless-steel construction Compatible with Type A slit carriers Precise, certified mass for consistent results The calibration mass meets OIML M1 requirements, providing a 20 g nominal value with a stated tolerance of 2.5 mg, which supports repeatable verification of balances and scales used in quality control or production monitoring. Because the mass specification is traceable and defined, it simplifies uncertainty assessments during routine checks and reduces the need for frequent recalibration of secondary weights. The certified accuracy and compact form make the calibration mass suitable where consistent, documented measurement performance is required. Durable design that eases handling and storage Manufactured from fine-turned stainless steel, the slit weight resists corrosion and maintains surface integrity under typical workshop conditions, helping to preserve its metrological properties over time. The cylindrical slit offers secure seating on Type A carrier rods, preventing unwanted rotation or contact that can introduce reading errors. With compact dimensions of 27 × 5.2 mm, the mass is easy to manoeuvre during verification procedures and fits common slit-weight holders without modification, improving workflow efficiency in confined workspaces. Practical applications and conformity in daily use This slit calibration weight is intended for use in laboratories, educational facilities and trade workshops for routine checks, occasional verifications and instrument acceptance testing. The robust construction and OIML M1 conformity ensure it meets legal and technical expectations for many industrial and commercial verification tasks. Sourcing from a German-manufactured origin supports confidence in consistent production quality, while the slit format provides straightforward interchangeability with existing Type A carrier systems, reducing the need for additional adapters. Contact Metav Werkzeuge for availability of the KERN 347-055 slit weight — benefit from OIML M1 traceability and secure dispatch from Emmerich; expert advice is available by email info@metav-werkzeuge.com or by phone +49 2822 7131930 Technical data Article number: 347-055 Manufacturer: KERN GTIN: 4045761256293 Country of origin: Germany Tariff number: 84239090 Dimensions & mass Nominal mass: 20 g Tolerance (OIML): 2.5 mg Dimensions (cylindrical): 27 × 5.2 mm Mass in kg: 0.02 Materials & features Material: Fine-turned stainless steel OIML class: M1 Type: Slit weight (Type A) Compatibility: Compatible with all Type A slit carriers FAQ What accuracy class does this calibration weight conform to? The KERN 347-055 conforms to OIML M1, offering a tolerance of 2.5 mg for the 20 g nominal mass, suitable for routine verification tasks. Can this slit weight be used with existing slit carriers? Yes, the slit format is Type A and is compatible with standard Type A slit carriers and carrier rods used for balance verification. Which material is used and how does it affect durability? The weight is made from fine-turned stainless steel, which provides corrosion resistance and stable surface quality for long-term metrological reliability. Is the size suitable for small-balance verification setups? With compact dimensions of 27 × 5.2 mm, the slit weight is particularly suited to confined setups and common slit-holder arrangements. Does the product include traceability information useful for quality records? The calibration mass is supplied to OIML M1 specification, which supports documented traceability and inclusion in routine quality-control records. Manufacturer: KERN, Germany — Seller contact: info@metav-werkzeuge.com, +49 2822 7131930
20 g Test Weight Button Shape OIML Class M3 Stainless Steel Precision Turned, 25 mg Tolerance - KERN
Take advantage of the combination of certified accuracy, corrosion‑resistant construction and compact design to ensure consistent weighing results and straightforward inventory tracking. Order the calibration weight directly via Metav Werkzeuge or consult our specialists for selection and delivery from Emmerich. KERN 367-05 — Calibration weight, 20 g, OIML class M3 The KERN 367-05 is a fine‑turned stainless‑steel button calibration weight designed for routine verification and calibration of laboratory and industrial scales. OIML class M3 accuracy for reliable calibration 20 g nominal mass with 25 mg tolerance Fine‑turned stainless steel, corrosion‑resistant finish Compact button form, 13 × 21.5 mm cylinder Consistent measurement results through certified accuracy The OIML M3 classification and the 20 g nominal mass provide a clear, verifiable basis for regular balance checks and routine calibrations. With a certified tolerance of 25 mg, this weight delivers repeatable results that support quality control processes and reduce the need for corrective rework. The classification indicates suitability for many industrial and commercial weighing applications where traceable, standardised reference masses are required; this improves process reliability and simplifies compliance with internal verification schedules. Durable, workshop‑ready construction for long service life Manufactured from fine‑turned stainless steel, the component is engineered for resistance to surface corrosion and wear in workshop environments. The button form offers a stable, low‑centre‑of‑gravity contact surface that eases handling and placement on small pans without risking tip‑over or imbalance. The robust machining and polished finish contribute to longevity and ensure that the mass remains stable over repeated use, reducing the frequency of replacement and supporting consistent production throughput. Traceability and easy inventory management for busy facilities Clear identifiers such as the SKU 367-05 and GTIN 4045761257245 enable straightforward stock keeping and traceability through procurement and calibration records. The compact dimensions (cylinder: 13 × 21.5 mm) and low mass make storage and transport efficient, while the origin from Germany supports expectations of manufacturing consistency. Using standardised reference masses like this one helps to maintain documented calibration histories and to demonstrate routine verification during audits. Contact Metav Werkzeuge for personalised procurement advice and prompt supply from Emmerich — ask about the KERN 367-05 for reliable calibration and traceable delivery options Technical data Article number: 367 SKU: 367-05 GTIN: 4045761257245 Manufacturer: KERN Facts Nominal mass: 20 g Mass in kg: 0.02 kg OIML class: M3 Tolerance: 25 mg Dimensions (cylinder): 13 × 21.5 mm Special features Material: Fine‑turned stainless steel Form: Button form Origin: DE Customs tariff number: 84239090 FAQ What is the intended use for this calibration weight? The KERN 367-05 is intended for routine verification and calibration of laboratory and industrial scales where an OIML M3 class mass is appropriate. Is the mass traceable for audit purposes? Yes. The KERN 367-05 carries clear identifiers (SKU 367-05, GTIN 4045761257245) that support record keeping and traceability in calibration logs. How precise is the 20 g nominal mass? The nominal mass of 20 g conforms to OIML class M3 with a tolerance of 25 mg, suitable for many commercial and workshop calibration tasks. Can this weight be used in corrosive environments? The fine‑turned stainless‑steel construction provides good resistance to surface corrosion; nevertheless, storage and handling practices should limit exposure to aggressive chemicals. Where is this calibration weight manufactured? The KERN 367-05 is produced in Germany and supplied through Metav Werkzeuge for distribution across Europe. Manufacturer: KERN — Germany. Distributor: Metav Werkzeuge, Emmerich am Rhein. Email: info@metav-werkzeuge.com. Phone: +49 2822 7131930. WhatsApp: +49 170 2837271
20 g Test Weight Button Stainless Steel Fine-Turned, OIML Class M2 - KERN
Benefit from precise OIML Class M2 performance, a compact 20 g nominal mass and a knob form that simplifies handling — ideal for routine calibration and small-mass checks. Order the (KERN 357-05) directly via (Metav Werkzeuge) or ask our consultants if needed. KERN 357-05 — Single calibration weight, OIML Class M2, 20 g, knob, stainless steel A KERN 357-05 single test weight for calibration and verification of laboratory and workshop balances, featuring a fine-turned stainless steel finish and ergonomic knob form. OIML class M2 accuracy for reliable calibration Fine-turned stainless steel for corrosion resistance Knob shape for safe handling and easy placement Nominal value 20 g for precise small-mass checks Reliable calibration performance for routine checks The OIML Class M2 designation indicates a calibration weight intended for routine verification where consistent, traceable results are required; the 20 g nominal mass provides a focused solution for small-mass adjustments and intermediate checks. Using a classed test weight reduces uncertainty in regular calibration procedures and supports documentation of measurement quality. The knob form and compact design make repeatable application to a balance straightforward, while the fine-turned finish minimises surface irregularities that can affect settling time and repeatability. Robust material and ergonomic handling for frequent use A fine-turned stainless steel construction combines dimensional stability with corrosion resistance, extending service life under normal workshop conditions. The knob form supports secure handling with tweezers or gloved fingers and reduces the risk of contamination from fingerprints — an important aspect when targeting minimal mass variation. Fine turning improves the surface finish and contributes to uniform mass distribution; this benefits both short-term repeatability and long-term stability, lowering the need for frequent replacement and supporting stable calibration intervals. Practical deployment in metrology and quality workflows Designed for use in calibration routines, quality checks and instrument verification, the test weight is suitable for routine laboratory and industrial balance maintenance. The compact nominal mass is particularly useful when verifying low-range scales or performing comparative checks against master standards. The combination of traceable class marking and a durable stainless-steel body helps integrate the weight into a documented calibration regime, supporting compliance with internal quality procedures and enhancing confidence in measurement results. Secure traceable calibration with KERN 357-05 — contact Metav Werkzeuge in Emmerich for order placement or tailored technical advice via info@metav-werkzeuge.com or by phone at +49 2822 7131930 Technical data Article number: 357-05 Manufacturer: KERN Category: Calibration weight SKU: 357-05 Measurements and class Nominal mass: 20 g Mass (kg): 0.02 OIML class: M2 Form: Knob form eClass: 32120103 Materials and special features Material: Fine-turned stainless steel Finish: fine-turned Intended use: routine calibration and verification of balances FAQ What does OIML Class M2 mean for calibration tasks? OIML Class M2 denotes a test weight suitable for routine calibration and verification where a defined level of accuracy and traceability is required; the KERN 357-05 carries this designation for consistent small-mass checks. Can the weight be handled directly by hand? The knob form of the KERN 357-05 facilitates handling with tweezers or gloved fingers to avoid contamination and minimise mass shifts caused by skin oils. Is the material resistant to corrosion in workshop conditions? The fine-turned stainless steel used for the KERN 357-05 provides good resistance to corrosion under normal laboratory and workshop environments. For which instruments is a 20 g nominal mass suitable? A 20 g nominal mass is appropriate for low-range analytical balances, precision bench scales and for verification steps where small-mass calibration points are required. How should the weight be stored to retain accuracy? Store the test weight in a dry, stable environment, ideally in a dedicated case or drawer that prevents contact with other objects; regular visual inspection and periodic recalibration maintain performance of the KERN 357-05. Manufacturer: KERN — Contact via Metav Werkzeuge, Emmerich am Rhein — info@metav-werkzeuge.com — +49 2822 7131930
20 g Test Weight Knob Form, OIML Class M1, Stainless Steel Precision Turned, 2.5 mg Tolerance - KERN
Take advantage of the combination of certified OIML M1 accuracy, finely turned stainless steel construction and compact 20 g nominal value for dependable balance verification; order directly via Metav Werkzeuge or consult our specialists for calibration advice. KERN 347-05 calibration weight — OIML M1, 20 g, stainless steel button The KERN 347-05 is a 20 g OIML M1 stainless steel button calibration weight, designed for precise verification of laboratory and workshop balances. OIML class M1 certified Nominal value 20 g Finely turned stainless steel Compact button form 13×23.5 mm Consistent traceable accuracy for routine verification The product delivers OIML M1 conformity with a stated tolerance of 2.5 mg, offering a reliable means of verifying balance performance and reducing measurement uncertainty. The nominal 20 g value provides a common reference mass for routine checks; its classification under international OIML standards ensures compatibility with commercial and industrial verification procedures. For many applications this level of accuracy is sufficient to maintain traceability in quality control workflows, supporting reproducible results across shifts and operators. Durable construction that supports longevity and stability Manufactured from finely turned stainless steel, the weight is resistant to corrosion and surface degradation, which helps preserve mass stability over time. The button-shaped form factor with compact dimensions reduces handling errors during placement on pans and minimises effects from residual air currents. As a single-piece mass, the component exhibits minimal surface wear and can be stored alongside other calibration artefacts without specialised packaging, contributing to a lower total cost of ownership through extended service life. Practical compliance and calibration options for the workshop The compact design and clear specification facilitate straightforward integration into existing calibration routines and audit documentation. The weight is supplied as an individual calibration mass suitable for balance adjustment and verification tasks. Note that initial EC verification (EG-Ersteichung) will no longer be possible from 30 November 2025; for continued traceability and official calibration documentation, a DAkkS calibration is recommended and is generally equivalent for most professional applications. This recommendation ensures the mass remains acceptable for regulated processes and quality assurance records. Contact Metav Werkzeuge for advice on DAkkS calibration and procurement of KERN 347-05 calibration weights, supplied reliably from Emmerich to the workshop bench Technical data Article number: 347 SKU: 347-05 GTIN: 4045761008687 Manufacturer: KERN Origin: DE Core specifications Nominal value: 20 g Tolerance (OIML M1): 2.5 mg Weight (net): 0.02 kg Form: Button Dimensions (cylinder): 13×23.5 mm Materials & special features Material: Finely turned stainless steel Product group: Single weight (individual weight) OIML class: M1 FAQ What level of accuracy does this calibration weight provide? The KERN 347-05 is specified to OIML M1 with a tolerance of 2.5 mg, providing a reliable reference mass for routine balance verification and quality checks. Is the 20 g weight suitable for laboratory balances? Yes; the 20 g nominal value and M1 classification make the weight appropriate for many laboratory and workshop balances where OIML M1 accuracy is required. How should the weight be calibrated for official traceability? A DAkkS calibration is recommended for the KERN 347-05 to maintain documented traceability and to meet most regulatory and audit requirements; note that EC initial verification will not be available after 30/11/2025. What material is the weight made from and how does that affect performance? The KERN 347-05 is made from finely turned stainless steel, which offers corrosion resistance and surface stability, helping to preserve mass accuracy over time. Is the button form advantageous for handling? The compact button form and the dimensions of 13×23.5 mm reduce handling variability and improve placement repeatability on balance pans, supporting consistent measurement procedures. KERN Germany GTIN: 4045761008687
20 kg Aluminium-Protected Case For Single Calibration Weights Padded, E1–M3 - KERN
Secure storage and reliable transport for calibration weights are achieved by combining a robust aluminium shell, a padded interior and compatibility with E1–M3 accuracy classes for single, button/compact weights up to 20 kg. Order the case directly via Metav Werkzeuge or consult our specialists for application advice. KERN 317-150-600 Aluminium-protected case for single calibration weights, padded An Aluminium-protected case that offers padded, professional storage for single calibration weights used in calibration laboratories and workshop environments. Aluminium-protected outer shell Padded interior for secure transport Compatible with E1–M3 single weights up to 20 kg Lightweight 1.7 kg for easier handling Secure protection for delicate calibration weights The aluminium outer housing delivers a hard-wearing barrier against knocks and abrasion while keeping the internal environment stable during transport and storage. Inside, the padded lining cushions individual weights in the button/compact form, reducing the risk of surface damage and preserving metrological integrity. Designed for single weights up to 20 kg and matching E1–M3 classes, the case supports traceable handling of reference masses and helps maintain calibration status between uses. Practical benefits for metrology workflows Lightweight construction at 1.7 kg and a compact footprint make the case easy to move between benches and transport boxes, improving workflow efficiency in calibration labs and service rounds. The materials and layout are chosen to simplify inventory management for calibration sets: items remain organised and immediately available for precision tasks. The design reduces handling stress on certified masses, supporting repeatable measurement results and saving time in routine calibration procedures. Durable design tailored to professional use The combination of an aluminium shell and internal padding creates a durable storage solution that adapts to regular workshop and laboratory use. Compatibility with the knob/compact weight format streamlines integration with existing equipment and storage racks. By protecting weight surfaces from dents and contamination, the case contributes to longer service life of reference masses and helps preserve conformity with accuracy classes during transport and short-term storage. Contact Metav Werkzeuge today for expert guidance on the KERN 317-150-600 aluminium-protected case and to arrange delivery from our Emmerich warehouse Technical data Article number: 317-150-600 Manufacturer: KERN GTIN: 4045761136052 ECLASS: 21100103 HS code: 84239090 Facts Weight (case): 1.7 kg Suitable for weights up to: 20 kg Suitable for classes: E1–M3 Materials / Special features Material: Aluminium Interior: padded For weights: single (button/compact) Origin: CN Product group: Aluminium-protected cases FAQ Which weight classes are supported by the case? The case accommodates calibration weights in classes E1 to M3, suitable for use with certified single knob/compact masses. Is the case suitable for weights up to 20 kg? Yes, the KERN 317-150-600 aluminium-protected case is designed for single weights with nominal values up to 20 kg. What materials and features protect the weights inside the case? The combination of an aluminium outer shell and a padded interior protects weight surfaces from mechanical damage during transport and storage. How heavy is the protective case itself? The empty case has a mass of 1.7 kg, allowing straightforward handling within calibration workflows. Does the case fit knob/compact style reference masses? The interior layout is specified for button/compact single weights, ensuring secure placement and reduced movement during transport. KERN; Origin: CN
20 kg Block Test Weight OIML Class M2, Painted Cast Iron, Tolerance 3 g - KERN
Take advantage of high reproducibility and robust construction combined with straightforward handling to streamline calibration routines; order the weight directly via Metav Werkzeuge or consult our specialists for further technical details. KERN 356-88 — Calibration weight, OIML Class M2, 20 kg block The KERN 356-88 is a 20 kg block calibration weight for verification and routine calibration of industrial and workshop scales, certified to OIML Class M2 for standardised accuracy. OIML Class M2 accuracy 20 kg block design for stability Coated cast iron for durable protection Accurate measurement as the basis for reliable decisions The primary benefit of an OIML-classified weight is measurement certainty. Certified as OIML Class M2, this block offers a declared tolerance 3 g, making it suitable for routine verification and adjustment of mid-range scales where standardised accuracy is required. The nominal mass of 20 kg provides a stable reference point for test routines, reducing the need for frequent repeat measurements and supporting consistent production quality. Explanation of terms is straightforward: OIML classes define permissible deviations, and Class M2 indicates suitability for general industrial and commercial control tasks. Robust construction that reduces handling risks Built as a block from coated cast iron, the design focuses on durability and occupational practicality. The compact block form minimises tipping and allows secure placement on scale pans, while the protective coating reduces surface wear and corrosion in workshop environments. These features translate into lower maintenance for the weight and fewer interruptions during calibration cycles. The solid construction also aids in handling ergonomics when transferring the weight between test stations, supporting faster and safer scale checks. Supply reliability, traceability and professional backing Choosing a verified calibration weight is part technical decision and part procurement assurance. Supplied by KERN and distributed via Metav Werkzeuge’s quality-controlled inventory in Emmerich, the item benefits from an established supply chain and documented traceability. Metav’s long-standing experience and centralised stock reduce lead times and provide a clear supply route for maintenance programmes. This combination of certified reference mass and dependable distribution supports audit readiness and fosters confidence in measurement results across production and inspection processes. For tailored advice on integrating the KERN 356-88 into existing calibration routines or to request delivery from Metav Werkzeuge in Emmerich, contact our consultants at info@metav-werkzeuge.com or call +49 2822 7131930. Technical data SKU: 356-88 Manufacturer: KERN Article number: 356 GTIN: 4045761248274 Facts Nominal value: 20 kg OIML class: M2 Tolerance (OIML M2): 3 g Country of origin: CN Tariff number: 84239090 Special features Block design Coated cast iron material Intended use: calibration / verification of scales Product group: single test weights FAQ What is the declared tolerance of this calibration weight? The declared tolerance for the KERN 356-88 (OIML Class M2) is 3 g. Is the weight suitable for routine industrial scale checks? Yes, the 20 kg block in OIML Class M2 is suitable for routine verification of industrial and workshop scales. What material is the weight made from and how does it affect longevity? The weight is made from coated cast iron; the coating protects against wear and corrosion, extending service life under typical workshop conditions. Can this weight be used for legal-for-trade calibrations? The KERN 356-88 is OIML Class M2; whether it is suitable for legal-for-trade applications depends on local regulations and the specific legal requirements for classes in that jurisdiction. How is traceability ensured for this product? Traceability is supported by the manufacturer’s certification (OIML class) and the supply chain documentation provided through Metav Werkzeuge. KERN · Origin: CN
20 kg Block Test Weight OIML F2 Stainless Steel, 300 mg Tolerance - KERN
Take advantage of precise mass metrology, corrosion‑resistant construction and traceable calibration for consistent balance verification. The combination of OIML F2 accuracy and a robust stainless steel block ensures repeatable results and low drift; order the 336-38 directly via Metav Werkzeuge or ask our consultants for calibration and handling advice. 336-38 Block weight by KERN — 20 kg, OIML F2, stainless steel 336-38 is a 20 kg block calibration weight designed for laboratory and industrial balance verification; suitable where high repeatability and robust handling are required OIML class F2 for precise balance verification 20 kg block mass for stable reference Stainless steel, glass‑bead blasted surface Recommended DAkkS calibration available Consistent verification thanks to certified accuracy The block mass delivers OIML F2 classification with a stated tolerance of 300 mg, providing a verifiable reference for medium‑accuracy balances and calibration routines. This degree of precision reduces measurement uncertainty in routine checks and internal quality controls, supporting traceable results. The specification is presented in standard metrology terminology so that procurement and quality teams can compare tolerances directly and plan verification intervals with confidence. Durable construction for reliable handling and long life Manufactured from stainless steel with a glass‑bead blasted finish, the mass resists corrosion and surface damage that could alter its effective value. The block design offers a stable footprint that minimises roll and positional error during weighing. Robust material choice and surface treatment lower maintenance requirements and preserve metrological properties over repeated use, ensuring a dependable reference mass in workshop and laboratory environments. Compliance guidance and calibration options Given recent regulatory changes, the item is supplied with a recommendation for DAkkS calibration, which provides recognized traceability for most industrial and laboratory applications. Note that EG initial verification of calibration weights will not be possible after 30.11.2025, so DAkkS certificates are advised for documented conformity. This guidance helps purchasers align procurement with current accreditation needs and maintain audit‑ready measurement systems. Contact Metav Werkzeuge in Emmerich for DAkkS calibration options, accessory recommendations and procurement support: info@metav-werkzeuge.com · +49 2822 7131930 · WhatsApp +49 170 2837271 Technical data SKU: 336-38 GTIN: 4045761232822 Manufacturer: KERN Country of origin: DE Tariff number: 84239090 Facts Nominal weight: 20 kg Tolerance (OIML F2): 300 mg OIML class: F2 Article number: 336 Special features Material: Stainless steel, glass‑bead blasted Design: Block mass Handling: Protective case recommended for accurate handling Calibration: DAkkS calibration recommended; EG initial verification not possible after 30.11.2025 FAQ What accuracy class does this calibration mass meet? The mass is classified as OIML F2; the specified tolerance is 300 mg, suitable for medium‑accuracy balance checks. Is a calibration certificate available for the block weight? Yes, a DAkkS calibration is recommended and can be arranged for the KERN 336-38 block weight to provide traceable measurement documentation. What material is the weight made from and why does it matter? The weight is made from stainless steel with a glass‑bead blasted finish; this reduces surface contamination and corrosion, maintaining metrological stability over time. Can this mass be used for legal verification purposes? After 30.11.2025 EG initial verification for calibration weights is no longer available; for most applications the DAkkS‑certified KERN block weight provides equivalent traceability and is therefore the recommended option. Is a protective case necessary? For weights in the F2 class and above, a protective case is recommended to avoid surface damage and to preserve the calibrated value during storage and transport. KERN · Germany · Contact: not provided
20 kg Block Weight OIML Class M3, Painted Cast Iron Block, 10 g Tolerance - KERN
Benefit from certified accuracy, a sturdy painted cast iron block and a compact 20 kg nominal mass for dependable, repeatable scale checks. Combine OIML M3 compliance, low tolerance and robust construction for streamlined calibration procedures. Order the calibration weight directly via Metav Werkzeuge or consult their specialists if additional technical information is required. KERN 366-88 Block calibration weight (OIML M3, 20 kg) A KERN 366-88 block calibration weight designed for routine verification and adjustment of industrial scales and balances in workshops and quality departments. OIML class M3 certified accuracy Nominal mass 20 kg Painted cast iron block design Tolerance ±10 g for reliable calibration Consistent reference mass for accurate scale adjustments The OIML M3 rating and the tolerance ±10 g provide a clear, traceable benchmark for frequent load checks and routine recalibration. As a mass standard suited to industrial environments, this block ensures measurement repeatability, reducing uncertainty in everyday weighing tasks. The nominal 20 kg mass is widely compatible with floor scales and bench balances, enabling efficient calibration cycles and predictable measurement outcomes. Durable block construction that withstands workshop use Manufactured from painted cast iron, the solid block format offers mechanical stability and resistance to knocks common in production areas. The compact rectangular shape simplifies handling and secure placement on weighing platforms, while the protective coating reduces corrosion risk and surface wear. These material and design choices translate into lower maintenance needs and longer service intervals for reference weights used in busy workshops. Clear certification and practical application in quality processes Certification to OIML M3 clarifies the permissible error band and supports documentation for internal quality systems. The tolerance ±10 g corresponds to measurable limits that can be directly applied to acceptance criteria during scale verification. The mass standard is therefore suitable for routine verification tasks, quality control checks and as a working reference in calibration routines where legal-for-trade high-precision weights are not required. For procurement, technical queries or calibration advice regarding the KERN block calibration weight, contact Metav Werkzeuge in Emmerich — email info@metav-werkzeuge.com or call +49 2822 7131930 to request a quotation or discuss delivery options from local stock Technical data Article number: 366-88 SKU: 366-88 GTIN: 4045761012011 Manufacturer: KERN Facts Nominal mass: 20 kg Tolerance: 10 g OIML class: M3 Tariff number: 84239090 Special features Material: painted cast iron Form: block weight Origin: FR FAQ What accuracy class does this calibration weight meet? The KERN 366-88 block calibration weight meets OIML M3 requirements, providing a tolerance of ±10 g for routine verification tasks. Is this weight suitable for industrial floor scales? Yes; the 20 kg nominal mass and robust block design make it appropriate for many floor and bench scales used in industrial settings. What material is the weight made from and how does that affect use? The weight is manufactured from painted cast iron, which offers mechanical resilience and basic corrosion protection for workshop environments. Can this weight be used for legal-for-trade calibrations? The KERN 366-88 is certified to OIML M3, which is suitable for routine verification; legal-for-trade applications may require a higher OIML class depending on local regulations. How should the weight be stored to maintain accuracy? Store the block calibration weight in a dry, temperature-stable environment and handle it with care to avoid surface damage that could affect mass consistency. KERN — Origin: FR
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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