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20 g Precision Calibration Weight Button Shape Polished Stainless Steel OIML E1, 0.025 mg Tolerance - KERN

Product information "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

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Blaues Kunststoff Etui für Einzelgewichte. Das Etui ist zylindrisch mit Rillen auf der Seite. Es sieht ein bisschen so aus wie eine Dose für Filme oder eine Regentonne in Miniatur.
20g Wooden Case For Single Calibration Weights, Padded - KERN

Protect valuable calibration weights with a padded wooden case that keeps a 20 g single weight secure and ready for use; compatibility with KERN weight series and a compact, lightweight design support efficient workshop routines. Order the case directly via Metav Werkzeuge or consult our specialists for tailored advice. KERN Wooden case for single weights 20 g (317-050-100) The wooden case for single weights offers secure, padded storage for 20 g calibration weights, suited to metrology, workshops and verification tasks. Padded wooden case for single weights Fits 20 g nominal weights, classes E1–F1 Compatible with KERN 307, 316, 317, 326, 327, 329 Secure storage that protects calibration accuracy The padded wooden case is designed to protect a single 20 g calibration weight from knocks, dust and moisture during storage and transport. By isolating the mass from external influences, the case helps to maintain the weight’s calibration integrity and reduces the risk of surface damage that can affect measurement traceability. For environments where repeated handling occurs, this protection translates into fewer recalibrations and uninterrupted measuring workflows. Efficient handling and straightforward organisation A compact, purpose-made storage solution simplifies daily routines in the workshop and laboratory. The interior padding holds the weight firmly in place, making placement and removal quick and reliable. Compatibility with several KERN single-weight series ensures consistent organisation across existing sets, reducing time spent searching for the right item. The lightweight construction supports easy transfer between benches or to mobile test locations without adding unnecessary bulk. Engineered for metrology requirements and easy identification Compatible with nominal 20 g weights in classes E1–F1, the case meets common metrology requirements for high-precision reference masses and is suitable for button/compact weight formats. The wooden exterior offers a stable, thermally neutral shell while the padded interior cushions against vibrations. Clear labelling with the SKU supports traceability and inventory control, aiding quality assurance processes and log keeping. For secure, standards-conscious storage of precision weights, contact Metav Werkzeuge in Emmerich at info@metav-werkzeuge.com or call +49 2822 7131930 to request the KERN wooden case 317-050-100 and expert procurement advice Technical data SKU: 317-050-100 GTIN: 4045761003613 Manufacturer: KERN Material: Wood Weight: 0.13 kg Facts Nominal value: 20 g Classes: E1–F1 Origin: DE HS code: 84239090 Special features Padded interior For single weights (button/compact) Compatible with KERN 307, 316, 317, 326, 327, 329 FAQ What weight does this case accommodate? The wooden case is designed for a single nominal 20 g calibration weight, suitable for button/compact formats. Which accuracy classes are supported? This storage solution supports weights of classes E1–F1, making it suitable for fine metrology and verification tasks. Is the case compatible with other KERN products? Yes, the case is compatible with KERN single weights including models 307, 316, 317, 326, 327 and 329. Does the case protect against environmental influences? The padded interior and wooden exterior provide protection from shocks, dust and minor moisture exposure, helping to preserve calibration. Can the case be used for transport between sites? The compact, lightweight design supports safe short-distance transport of a single reference weight while maintaining its protective cushion. KERN — Germany — Manufacturer contact not provided

Regular price: €31.00
Product Quantity: Enter the desired amount or use the buttons to increase or decrease the quantity.
Blaues Kunststoff Etui für Einzelgewichte. Das Etui ist zylindrisch mit Rillen auf der Seite. Es sieht ein bisschen so aus wie eine Dose für Filme oder eine Regentonne in Miniatur.
20g Plastic Case For Single Calibration Weights, For Class E2 - KERN

Take advantage of a compact storage solution that combines robust plastic construction, protection for single 20 g calibration weights and a lightweight design for easy handling. The result is organised, traceable storage for E2-class single weights that supports efficient calibration workflows; order the case directly via Metav Werkzeuge or ask our consultants for tailored advice. KERN 317-050-400 Plastic Weight Case — secure storage for 20 g single weights, class E2 A compact Plastic Weight Case by KERN designed for secure storage and protection of individual 20 g calibration weights intended for class E2 applications Plastic case for single 20 g weights Compatible with E2 accuracy class Lightweight, impact-resistant design Protected and orderly storage to streamline calibration routines The case offers secure containment for individual calibration weights, reducing handling errors and protecting sensitive masses during storage and transport. With a compact footprint and impact-resistant plastic body, the storage solution prevents scratches and contamination that could affect measurement results. This contributes directly to more reliable mass checks and faster set-up in quality control processes, supporting consistent calibration routines in production and workshop environments. Designed for compatibility with precision weights and simple handling Manufactured to accommodate 20 g button/compact weights and matched to class E2, the case ensures that each mass remains identifiable and accessible. The internal layout maintains the order of individual weights, simplifying inventory checks and traceability. The lightweight construction also reduces transport effort between storage and balance, enabling technicians to focus on measurement tasks rather than logistical handling. Durable materials and straightforward workshop integration Made from robust plastic, the case balances durability with a low overall weight of 0.02 kg, making it easy to carry and store without compromising protection. Its plain, functional design fits naturally into calibration rigs and benches, while compatibility with common single-weight formats keeps it versatile across different metrology setups. Fewer damaged weights and clearer organisation lead to lower rework and improved uptime for inspection tasks. Contact Metav Werkzeuge in Emmerich for tailored advice on the KERN 317-050-400 plastic weight case — email info@metav-werkzeuge.com or call +49 2822 7131930 Technical data SKU: 317-050-400 Manufacturer: KERN GTIN: 4045761081352 Facts For weight: 20 g Accuracy class: E2 Weight: 0.02 kg Commodity code: 84239090 eClass: 21100103 Special features Material: plastic For single weights (button/compact) Origin: DE Storage solution for individual calibration weights FAQ Which weights fit this case? The plastic weight case is designed for individual 20 g single weights in the button/compact form factor and is suitable for organised storage of these items. Is the case suitable for class E2 calibration weights? Yes; the KERN 317-050-400 plastic case is specified for storage of E2-class single weights and supports proper handling to maintain their calibration condition. What is the weight and material of the case? The storage case is made from plastic and has an approximate weight of 0.02 kg, offering a lightweight yet protective solution for everyday workshop use. Who manufactures the product and what is the SKU? The case is manufactured by KERN and sold under SKU 317-050-400 (GTIN 4045761081352). Metav Werkzeuge, Emmerich am Rhein, Germany · info@metav-werkzeuge.com · +49 2822 7131930 · WhatsApp +49 170 2837271

Regular price: €5.00
Product Quantity: Enter the desired amount or use the buttons to increase or decrease the quantity.
Blaues Kunststoff Etui für Einzelgewichte. Das Etui ist zylindrisch mit Rillen auf der Seite. Es sieht ein bisschen so aus wie eine Dose für Filme oder eine Regentonne in Miniatur.
20g Aluminium-Protected Case Padded For Single Weights E1–M3 - KERN

Robust aluminium protection combined with a padded interior and a compact, button-style layout ensures secure transport and storage for single calibration weights of 20 g, suitable for precision classes E1–M3. Order the (Aluminium-protected case KERN 317-050-600) directly via (Metav Werkzeuge) or ask our consultants if needed. Aluminium-protected case KERN 317-050-600 — padded housing for single calibration weights The Aluminium-protected case provides secure, compact storage for individual calibration weights in the button/compact format and is designed for professional metrology environments Aluminium-protected housing Padded interior for secure storage For 20 g single weights E1–M3 Protection that preserves measurement integrity The solid aluminium shell offers mechanical protection against knocks and abrasion, while the padded interior prevents movement and surface damage during handling and transport. For traceable calibration workflows, physical protection of weights reduces the risk of mass change due to nicks or contamination; this maintains calibration accuracy and extends service intervals. The compact footprint suits crowded calibration benches and dedicated transport boxes, supporting efficient storage without compromising accessibility. Built for calibration routines and compliance Designed specifically for single nominal values of 20 g and for precision classes E1–M3, the case supports standard conformity requirements used in laboratory and workshop calibration procedures. The internal layout accommodates the button/compact form factor used by many precision weight manufacturers, ensuring a snug fit that minimises handling time and error potential. The result is a reliable aid to routine calibrations, helping to keep measurement chains stable and reducing downtime associated with damaged weights. Practical handling for workshops and laboratories Lightweight at about 0.18 kg, the case remains easy to carry while providing solid protection, making it suitable for mobile calibration kits or fixed bench use. The durable finish simplifies cleaning and helps prevent corrosion-related issues in humid environments. Label space and compact dimensions make inventory management straightforward, supporting orderly storage and rapid identification of the contained 20 g weight. Combining robust materials with considered ergonomics contributes to workflow efficiency and asset longevity. Choose the KERN aluminium-protected case for secure storage of precision weights and contact Metav Werkzeuge in Emmerich for ordering or technical consultation via info@metav-werkzeuge.com or by phone Technical Data Article number: 317 SKU: 317-050-600 Manufacturer: KERN GTIN: 4045761222663 Country of origin: CN Commodity code: 84239090 Net weight: 0.18 kg Core specifications Suitable for nominal values: 20 g Calibration classes: E1–M3 Eclass: 21100103 Materials and special features Material: Aluminium Interior: padded Design: button/compact for single weights Product group: Aluminium-protected cases FAQ What nominal weight fits this case? The aluminium-protected case is sized for a single nominal value of 20 g, optimised for button/compact weight formats. Which calibration classes are supported? This case is specified for precision classes E1–M3, making it suitable for high-accuracy laboratory and workshop calibration tasks. Is the interior suitable for regular transport? Yes, the padded interior prevents movement and surface damage, supporting safe transport within mobile calibration kits. What material is the housing made from? The housing is made from aluminium, providing a robust exterior that resists knocks and abrasion during routine use. Who supplies this case and how does it fit into a calibration workflow? The case is manufactured by KERN and is intended to protect single calibration weights during storage and handling, aiding consistent measurement procedures. KERN · Origin: China · SKU: 317-050-600

Regular price: €14.00
Product Quantity: Enter the desired amount or use the buttons to increase or decrease the quantity.
Pinzette zum anheben von Milligrammgewichten auf weißem Hintergrund. Die Pinzette ist silbern mit roten, leicht gebogenen Spitzen.
100mm Tweezer For Small Calibration Weights 1 mg–200 g, Polyamide - KERN

Take advantage of a lightweight, polyamide handling tool that ensures a secure grip on small calibration weights up to 200 g; its 100 mm length combines fine control with easy handling for routine calibration tasks. Order directly via Metav Werkzeuge or consult our specialists for matching accessories and delivery from Emmerich. KERN 315-242 Tweezer (Polyamide, 100 mm) KERN 315-242 is a precision plastic tweezer for secure handling of small calibration weights in laboratories and workshops Secure grip for small calibration weights Suitable for weights E1–M3, 1 mg–200 g 100 mm length for precise handling Polyamide construction, lightweight 10 g Precision handling reduces contamination and measurement error The compact design provides a controlled hold when placing and removing calibration masses, helping to preserve the integrity of sensitive components. Made from polyamide, the instrument is gentle on metallic and plated surfaces and reduces risk of scratching or marking. The compatibility with 1 mg–200 g weights across E1–M3 classes means the tool supports a wide range of calibration workflows, supplying consistent handling where repeatability matters. Built for routine use, the tweezer contributes to faster setup times and fewer handling-related deviations. Comfortable length and light weight for repetitive tasks At 100 mm, the geometry balances reach and tactile feedback to enable precise positioning without overextension of the hand. The construction results in a lightweight tool — approximately 10 g — that decreases operator fatigue during repeated handling. The slim tips facilitate access to small masses and narrow pans, while the overall form factor supports careful handling during calibration runs. Clear, repeatable manipulation of weights improves throughput and aids adherence to internal quality procedures. Durable, easy-care design for laboratory and workshop environments The choice of high-quality plastic provides a durable and easy to clean solution suitable for environments where metal tweezers could risk scratching or produce magnetic influence. Maintenance is straightforward: wipe clean and store in a dry place to maintain tip alignment and performance. The tool's simple construction minimises service requirements and offers a dependable adjunct to balances, scales and precision measuring equipment in both calibration laboratories and industrial workshops. Contact Metav Werkzeuge today for tailored advice and supply of the KERN 315-242 tweezer; our Emmerich-based team can confirm suitability for specific calibration setups and arrange prompt delivery via the central European warehouse (info@metav-werkzeuge.com | +49 2822 7131930 | WhatsApp +49 170 2837271) Technical data Article number: 315 SKU: 315-242 Manufacturer: KERN GTIN: 4045761003439 Material: Polyamide (plastic) Facts Length: 100 mm Weight: 0.01 kg Suitable weight range: 1 mg–200 g Special features Secure grip for small calibration weights Suitable for weight classes E1–M3 Lightweight construction for reduced operator fatigue Simple cleaning and low maintenance FAQ What weight range is compatible with these tweezers? The KERN 315-242 tweezer is suitable for handling calibration weights from 1 mg up to 200 g. Which weight classes can be handled safely with this tool? This tweezer supports weights across classes E1 to M3, making it appropriate for a broad range of calibration tasks. Is the material safe for delicate or plated masses? Yes, the polyamide construction of the KERN 315-242 is designed to be gentle on delicate and plated surfaces, helping to avoid scratches. How should the tweezer be maintained to ensure longevity? Routine care for the KERN 315-242 involves simple cleaning with a soft cloth and storage in a dry place to preserve tip alignment and performance. Can this tool be used in both laboratory and workshop environments? The lightweight, easy-care design of the KERN 315-242 makes it suitable for calibration benches in laboratories as well as workshop settings where precise handling is required. Metav Werkzeuge, Emmerich am Rhein, Germany — Email: info@metav-werkzeuge.com — Tel: +49 2822 7131930 — WhatsApp: +49 170 2837271

Regular price: €5.00
Product Quantity: Enter the desired amount or use the buttons to increase or decrease the quantity.
Pinzette zum anheben von Milligrammgewichten auf weißem Hintergrund. Die Pinzette ist silbern mit roten, leicht gebogenen Spitzen.
105mm Tweezer For Handling Small Test Weights, Teflon-Coated Tips - KERN

Take advantage of secure handling of small calibration weights, robust stainless steel construction and a compact 105 mm length for precise control; order the tweezers directly via Metav Werkzeuge or contact our consultants for application advice. Pinzette 315-243 — Precision tweezers by KERN, stainless steel, 105 mm The Pinzette 315-243 is a precision tweezer designed for the secure handling of small calibration weights in laboratories and workshop environments. Secure grip for micro calibration weights Stainless steel construction Length 105 mm for fine control Suitable for 1 mg – 200 g (E1 – M3) Secure handling for trace and routine calibration tasks The compact design delivers a secure grip for very small test weights, reducing the risk of slippage and accidental contact. Its dimensions, including the 105 mm length, allow for controlled, repeatable handling that supports efficient calibration workflows. This contributes to fewer handling errors and a more consistent weighing routine when working with weights from 1 mg – 200 g. Durable construction that keeps processes dependable Manufactured in stainless steel, the tool combines durability with low maintenance, ensuring longevity in daily metrology use. The robust construction helps maintain geometric stability and handling precision under repeated use, which supports reliable measurement results and reduces downtime for replacements. The design suits both laboratory benches and on-site calibration setups where space and dexterity matter. Practical compatibility and metrology clarity Designed for compatibility with standard calibration classifications, the tweezers are suitable for weights in classes E1 – M3, covering high-accuracy laboratory weights as well as routine workshop standards. For users less familiar with weight classes: these designations indicate recognised accuracy ranges used by calibration professionals and metrology services, ensuring the tool is appropriate for precise, standard-compliant handling. Confidence through expert supply and service Sourcing tools from a trusted partner simplifies procurement and post-sale support. Metav Werkzeuge stands for democratisation of precision, offering an extensive range of metrology supplies from its base in Emmerich. With a broad catalogue and a long-standing customer base, the emphasis is on dependable availability and a clear supply chain that supports uninterrupted calibration operations. Contact Metav Werkzeuge for tailored advice on the KERN 315-243 tweezers and to confirm suitability for specific weight classes — email info@metav-werkzeuge.com or call +49 2822 7131930 for fast guidance from our Emmerich team Technical data Article number: 315 SKU: 315-243 Manufacturer: KERN GTIN: 4045761067615 Length: 105 mm Net weight: 0.02 kg Facts Suitable weight range: 1 mg – 200 g Applicable weight classes: E1 – M3 Material: Stainless steel Special features Secure gripping geometry for small calibration weights Compact format for precise handling and repeatability Designed for laboratory and workshop use Rapid dispatch and broad metrology assortment available from supplier FAQ How small a weight can be handled with these tweezers? The Pinzette 315-243 from KERN is suitable for handling weights from 1 mg up to 200 g, covering the usual micro and small calibration weights used in precise weighing tasks. What material is the tool made from and why does that matter? The tweezers are made from stainless steel, giving corrosion resistance and dimensional stability that support consistent handling and long service life in metrology environments. Are these tweezers suitable for laboratory-grade calibration weights? Yes, the KERN 315-243 is specified for weights in classes E1 – M3, which includes high-accuracy laboratory weights as well as standard workshop classes, making it appropriate for professional calibration work. What are the physical dimensions and weight of the tweezers? The tweezers measure 105 mm in length and have a net weight of 0.02 kg, offering a compact tool that balances control with minimal contact force. Metav Werkzeuge, Emmerich am Rhein, Email: info@metav-werkzeuge.com, Tel: +49 2822 7131930

Regular price: €18.00
Product Quantity: Enter the desired amount or use the buttons to increase or decrease the quantity.