Skip to main content


I have been offered a verification that costs less than a Cofrac calibration. What should I do?


By referring to the definitions of calibration and verification, you will notice that it is usually preferable to proceed with a calibration before being in a position to perform any verifications, according to the terms in example2. Inthis case, it is difficult to claim that a verification costs less than a calibration. The second part of the question is about calibrations performed by accredited laboratories. It is quite possible that non-accredited laboratories propose verifications that cost less than the calibrations proposed by accredited laboratories. If you use a non-accredited laboratory, then the normative requirements impose a number of actions in order to evaluate your subcontractor (see "La métrologie un outil pour la qualité" (Metrology: a tool for quality), available in French and English, on the publications page of this site for more information on the assessment of calibration or verification service providers).

Measurement FAQ  

This FAQ contains answers to the questions that you ask most frequently. This list is far from complete. We regularly add new questions and answers.
Please send your questions and suggestions. It will help us to improve our FAQ for all users.

For further information you can access to level 2 of the FAQ by beciming a member of the CFM.


send your question FAQ level 2