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Primary Laboratory

Covariance primary mass metrology laboratory offers the calibration of all weights from 1 mg to over 25 kg under all ASTM Classes, as well as OIML E2, F1-F2, M1-M3 classes.


The environmental conditions have optimal stability for the calibrations carried out. More than 8 mass comparators are used for the measurement operations.


The calibration service offers a comprehensive certificate including the conventional masses and their assigned uncertainties.

Cleaning and adjustment* of the weights are also offered services **

* Certain fees for adjustments may be necessary

** Weight cleaning (liquid) if necessary requires a stabilization time of         5 to 7 days before performing a new calibration

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