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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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News
6 NOVEMBER 2026
Key comparison in photometry - CCPR
The results of the key comparison CCPR-K2.b.2016 have been published in the KCDB. This is a comparison on spectral responsivity piloted by  Korea Research Institute of Standards and Science (KRISS), Republic of Korea with participants from 12 state economies.
5 NOVEMBER 2026
Key comparison in dimensional metrology - CCL
The results of the key comparison CCL-K3.n01 have been published in the KCDB. This is a comparison on angle standards in the field of Length, coordinated by the National Research Council (NRC), Canada in which 10 state economies participated. 
5 NOVEMBER 2026
Key comparison in gases - CCQM
The results of the key comparison CCQM-K82.2023 have been published in the KCDB. This is a comparison on the measurement of methane in air in the field of Chemistry and Biology, coordinated by the BIPM including 11 participants.
5 NOVEMBER 2026
Key comparison in pressure - APMP
The results of the key comparison APMP.M.P-K4 linked to CCM.P-K4.2012 have been published in the KCDB. This is a comparison on pressure measurements in gas piloted by the Korea Research Institute of Standards and Science (KRISS) with 6 participants.
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Statistics
AFRIMETS APMP COOMET EURAMET GULFMET SIM
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Currently in the KCDB there are
263 CIPM MRA participants
1290 key comparisons
26449 CMCs
784 supplementary comparisons