1 mg Precision Mass Wire Form E1, Stainless Steel Polished, 0.003 mg Tolerance - KERN
€90.00
Product information "1 mg Precision Mass Wire Form E1, Stainless Steel Polished, 0.003 mg Tolerance - KERN"
Take advantage of the combination of laboratory-grade accuracy, robust stainless steel construction and a compact wire form for reliable micro-calibration results; order the reference directly via Metav Werkzeuge or ask our consultants for accessory recommendations.
Milligram weight KERN 308-31 — OIML class E1, 1 mg wire form
The Milligram weight KERN 308-31 is a precision reference weight for the calibration of analytical balances and microbalances in laboratories and quality control environments.
- OIML class E1 high-precision standard
- Nominal value 1 mg for micro calibration
- Polished stainless steel wire form
- Tolerance ±0.003 mg, traceable quality
Laboratory-grade accuracy for minimal uncertainty
The Milligram weight KERN 308-31 is specified to OIML class E1, providing the tight tolerances required for the calibration of high-precision analytical balances. With a nominal value of 1 mg and a tolerance ±0.003 mg, this reference reduces measurement uncertainty during routine verifications and documented calibrations. The classification signals suitability for use in calibration laboratories and production sites where legal-for-trade or traceable measurement standards are necessary. The clear numeric specification supports compliance and auditing processes while enabling consistent measurement results.
Practical design that protects measurement integrity
Constructed in polished stainless steel and supplied in a wire form, the weight minimises surface contact and contamination risk, which is crucial at the milligram level. The polished finish aids cleaning and reduces adsorption of oils or residues, while the slim profile of the wire form facilitates safe handling with tweezers or lifting tools commonly used in metrology. These design choices directly translate into fewer handling artefacts and a lower likelihood of drift between verifications, supporting smoother laboratory workflows and reproducible outcomes.
Handling, storage and recommended accessories
For best long-term performance, handle the calibration reference with clean tweezers and store it in a suitable protective case to prevent contamination and mechanical damage. Due to the very fine tolerance, a protective case is recommended to preserve the integrity of the mass surface and dimensional stability; Metav Werkzeuge lists compatible cases to match this requirement. Routine checks and proper storage reduce the need for frequent corrective actions and maintain the reference standard’s conformity with the required metrological class.
For laboratory-grade micro calibration, choose the KERN 308-31 milligram reference and contact Metav Werkzeuge in Emmerich for procurement advice and recommended protective cases at info@metav-werkzeuge.com or by phone on +49 2822 7131930
Technical data
- Article number: 308
- SKU: 308-31
- GTIN: 4045761002937
- Manufacturer: KERN
- Origin: Germany
Core data
- Nominal value: 1 mg
- OIML class: E1
- Tolerance (OIML): ±0.003 mg
- Tariff number: 84239090
Special features
- Form: wire form
- Material: polished stainless steel
- Recommended for: calibration of analytical balances and microbalances
- Recommended accessory: protective case
FAQ
Is this weight suitable for calibrating analytical balances?
The KERN Milligram weight 308-31 (OIML class E1, 1 mg) is intended for use in the calibration and verification of analytical balances and microbalances where milligram accuracy is required.
What does OIML class E1 indicate for performance?
OIML class E1 denotes the highest accuracy for mass standards used in calibration labs; the specification for the 308-31 includes a tolerance of ±0.003 mg, reflecting very tight metrological limits.
How should the weight be handled to avoid damage?
Handle the polished stainless steel wire with clean tweezers and store the weight in a protective case to prevent contamination and contact damage, preserving its tolerance and surface finish.
Does the wire form offer any practical benefits?
The wire form reduces the contact area and simplifies handling with tweezers, lowering the risk of surface contamination and enabling precise placement on microbalance pans.
Is the 308-31 suitable for routine laboratory use or only for reference labs?
With its E1 classification and milligram tolerance, the 308-31 serves both as a high-precision reference in calibration laboratories and as a reliable verification standard in quality-controlled production environments.
KERN — Origin: Germany; GTIN: 4045761002937