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CIPM MRA PARTICIPANTS
All data listed in the KCDB have been reviewed and approved within the CIPM Mutual Recognition Arrangement
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CIPM MRA PARTICIPANTS
Calibration and Measurement Capabilities – CMCs
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Key and supplementary comparisons
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Added keywords act as an additional filter. Keywords separated by a space will be treated by the logical function AND automatically. You may also use OR. Keyword searches also find close matches. Placing quotation marks (") before and after the search word, e.g. "word", will allow for exact matches.

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News
5 MAY 2026
Vibration - SIM
4 new CMCs in vibration measurements have been published in the KCDB for the United States via SIM, in the field of Acoustics, Ultrasound and Vibration.
5 MAY 2026
Properties of materials - SIM
A new CMC in the measurement of properties of materials has been published in the KCDB for Brazil via SIM, in the field of Photometry and Radiometry.
5 MAY 2026
Properties of detectors and sources - EURAMET
A new CMC in the measurement of properties of sources has been published in the KCDB for the United Kingdom via EURAMET, in the field of Photometry and Radiometry.
29 APRIL 2026
Key Comparison on luminous flux - GULFMET
The final reports and results of the key comparisons GULFMET.PR-K4.2021.1 and GULFMET.PR-K4.2021.2 have recently been published in the KCDB. These bilateral key comparisons on luminous flux are linked to CCPR-K4 and piloted by UME, Türkiye with participants SASO-NMCC, Saudi Arabia and NIS, Egypt.
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Statistics
AFRIMETS APMP COOMET EURAMET GULFMET SIM
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Currently in the KCDB there are
258 CIPM MRA participants
1268 key comparisons
26397 CMCs
770 supplementary comparisons