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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
17 JULY 2026
Acoustics, Ultrasound and Vibration - APMP
12 first CMCs in acoustics and vibration and 3 first CMCs in sound in water have been published in the KCDB for Singapore and India respectively via APMP, in the field of Acoustics, Ultrasound and Vibration.
17 JULY 2026
DC voltage and resistance - APMP
2 new and 1 revised CMCs in DC voltage and resitance have been published in the KCDB for China and Thailand via APMP, in the field of Electricity and Magnetism.
15 JULY 2026
Key comparison on absorbed dose to water - BIPM
The Final reports and latest results from the continuous key comparisons BIPM.RI(I)-K4 and BIPM.RI(I)-K6 have been published in the KCDB, including those obtained with the National Physical Laboratory, United Kingdom. These comparisons comprise a series of bilateral comparisons of absorbed dose to water in Co-60 and accelerator photon beams, supporting traceability and calibration services for radiotherapy applications.
10 JULY 2026
Gas analysis - SIM
4 revised CMCs in gas analysis have been published in the KCDB for Mexico via SIM, in the field of Chemistry and Biology.
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Statistics
AFRIMETS APMP COOMET EURAMET GULFMET SIM
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Currently in the KCDB there are
259 CIPM MRA participants
1277 key comparisons
26262 CMCs
774 supplementary comparisons