High-grade stainless steel knob and wire reference weights in class "E0" - with a higher accuracy than OIML class E1 weights - enable calibration of mass standards with the highest metrological performance.
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Reference Weights for Calibration of Mass Standards
Calibration Certificates
To produce “E0” weights, METTLER TOLEDO hand-selects the best E1 weights which are then calibrated by an NMI with an uncertainty of 1/5*MPE (E1). These reference weights are delivered with an NMI calibration certificate.
Expertly Crafted and Calibrated Weights
Our unique manufacturing process involves traditional mechanical polishing, final stage electrolytic polishing, fully automated cleaning and final calibration using state-of-the-art mass comparators.
Microgram Weights for Specialized Applications
Microgram weights and weight sets (50 µg to 500 µg) are used predominantly for scientific research and calibration. They also support general industrial research in areas where instrument calibration with milligram weights is not sufficiently accurate.
Nifty Tools
Handling microgram weights can be a challenge. A specially developed set of tools makes routine use easy and ensures safe and proper handling. It is a simple matter to lift the weights from the magazine and place them on a robotic or manual balance.
Intelligent Concept
A fully developed system with unique, specially designed tools simplifies the whole measuring process and sets a complete new standard for smart handling. This system includes:
- a special handling tool
- an acclimatization magazine
- a protective aluminum container, and ceramic tweezers
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Kalibreringscertifikat
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Calibration Service
Service Offering
Balances or scales should always be checked with reference weights that you can rely on and trust. Our accredited mass laboratories clean, calibrate and adjust your weights, then document the results in calibration certificates with details of conventional mass correction, uncertainty and traceability information according to ISO/IEC 17025.
Calibrating, Passion at Work
Our unmatched global network of 14 calibration laboratories across Europe, the Americas and Asia guarantee fast and cost-effective mass calibration. Our metrology staff are passionate about their calibration work, to ensure you receive first class service as well as continuously improved results.
Using State-of-the-Art Robotic Mass Comparators
The combination of robotic technology and world-class mass comparators delivers proven reliability and outstanding measurement performance.
Scope up to 5 t
Scopes range from OIML E to M classes and ASTM classes. For heavy-duty weights, services cover all steps from re-painting to calibration, even for weights up to 5 t.
Professional Weight Cleaning
Weights up to 50 kg undergo treatment in a total of six separate customized baths. Each weight is cleaned and stabilized in a fully automated process prior to calibration to ensure uniform surface conditions.