1 mg-50 g Precision Weight Set Three-Point Button, Polished Stainless Steel, Wooden Case - KERN

Take advantage of the combination of OIML Class E1 accuracy, a wide 1 mg–50 g range and protective storage for reliable calibration results; order directly via Metav Werkzeuge or consult our specialists for tailored advice.

KERN 303-02 weight set — OIML Class E1, 1 mg–50 g, polished stainless steel

The KERN 303-02 is a precision weight set designed for calibration and verification of analytical balances in laboratories and calibration workshops.

OIML Class E1 accuracy for high-precision calibration Range 1 mg–50 g for analytical to semi-micro balances Polished stainless steel button weights for corrosion resistance Presentation wooden case with separate plastic insert for mg weights

Ensure measurement certainty with top-tier accuracy

The set is specified to OIML Class E1, a designation that denotes the highest accuracy level used for laboratory calibration standards. This classification means the weights are suitable as reference standards when performing balance verification or routine calibration tasks. The combination of class and nominal range from 1 mg–50 g reduces uncertainty in analytical applications and supports stringent quality control procedures. For facilities that must demonstrate traceable measurement capability, investing in an E1 set delivers measurable improvements in reproducibility and reduces the risk of out-of-tolerance results.

Robust materials and secure storage to protect precision

Manufactured from polished stainless steel, the button-shaped weights resist corrosion and surface wear while keeping mass stability over time. The small milligram weights are housed separately in a plastic insert, preventing accidental contact and handling damage during storage and transport. All items are supplied in a wooden presentation case, which provides both organised storage and physical protection against shocks and contamination. These design choices help maintain calibration integrity, reduce handling errors and extend service life—benefits that translate into fewer interventions and lower long-term maintenance.

Practical handling and workflow benefits for calibration labs

The set’s button form facilitates precise handling with tweezers or weight lifters, improving ergonomics during repeated calibrations and minimising the risk of fingerprints or contamination that could affect mass values. Supplied as a coherent kit, it supports efficient workflow: technicians can complete verification tasks faster and with fewer interruptions for sourcing additional weights. The durable finish and organised case make the set suitable for both stationary laboratory use and controlled transport between departments or on-site visits by calibration teams.

Contact Metav Werkzeuge to arrange supply of the KERN 303-02 weight set or to discuss which E1 standards best match current calibration requirements

Technical Data

• Article number: 303
• SKU: 303-02
• GTIN: 4045761002463
• Manufacturer: KERN
• Origin: DE
• Tariff number: 84239090

Facts

• Nominal range: 1 mg–50 g
• Class: OIML E1
• Total weight (set): 0.78 kg
• Form: Button-shaped
• Case material: Wood

Special features

• Polished stainless steel
• Milligram weights (1–500 mg) in a separate plastic case
• Supplied in wooden presentation case
• Suitable for laboratory calibration and verification

FAQ

What level of accuracy does this weight set provide?
The KERN 303-02 weight set meets OIML Class E1, which represents the highest accuracy typically used for laboratory reference standards and precise calibration work.

Is the set suitable for calibrating analytical balances?
Yes. With a nominal range of 1 mg–50 g and E1 classification, the set is intended for analytical and semi-micro balance verification in laboratory environments.

How are the smallest weights protected during storage?
Milligram weights within the KERN 303-02 are stored separately in a plastic insert inside the wooden case to prevent handling damage and contamination.

Metav Werkzeuge, Emmerich am Rhein, Germany — Email: info@metav-werkzeuge.com — Phone: +49 2822 7131930 — WhatsApp: +49 170 2837271