National Physical Laboratory

What is the Mutual Recognition Agreement/Arrangement? (FAQ - Length)

This is an arrangement amongst the majority of the world's National Metrology Institutes (including NPL, NIST, PTB, etc.) whereby each institute agrees to recognise measurement standards and calibration and measurement certificates issued by other signatories of the agreement.

Effectively, this means that the National Standards covered by the agreement are metrologically equivalent to each other.

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Last Updated: 22 Dec 2016
Created: 18 Jul 2007


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