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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
26 MARCH 2026
Key comparison in active power - CCEM
The Final report of the key comparison CCEM-K5.2017 has been approved and published in the KCDB. This is a comparison of active power at 53 Hz in the field of Electricity and magnetism in which ten state economies participated.
25 MARCH 2026
Gas Analysis - AFRIMETS
8 revised CMCs in gas analysis have been published in the KCDB for South Africa via AFRIMETS, in the field of Chemistry and Biology.
25 MARCH 2026
Temperature - SIM
5 first CMCs in temperature measurements have been published in the KCDB for Ecuador via SIM in the field of Thermometry.
20 MARCH 2026
Quantum Hall Resistance - BIPM
The Final report and most recent results of the continous key comparison BIPM.EM-K12 have been published in the KCDB, including the first results obtained with Centro Español de Metrologia (CEM), Spain in November 2025. This is a comparison of resistance using a Quantum Hall resistance standard in which 12 institutes have taken part.
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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
1264 key comparisons
26410 CMCs
767 supplementary comparisons