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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
21 NOVEMBER 2025
Supplementary Comparison in Length - SIM
The Final report of the supplementary comparison SIM.L-S2.2.n02 has been approved and published in the KCDB. This is a comparison of calibration of gauge blocks measured by mechanical and interferometric technique in the field of Diemensional metrology in which 8 state economies participated.
20 NOVEMBER 2025
Supplementary Comparison in Length - SIM
The Final report of the supplementary comparison SIM.L-S2.2.n01 has been approved and published in the KCDB. This is a comparison of calibration of central length and variation of steel gauge blocks in the field of Diemensional metrology in which 14 state economies from SIM and 1 country from GULFMET participated.
18 NOVEMBER 2025
Dimensional metrology - AFRIMETS
4 first CMCs in dimensional metrology have been published in the KCDB for Zimbabwe via AFRIMETS, in the field of Length.
18 NOVEMBER 2025
Dimensional metrology - AFRIMETS
1 new CMC in dimensional metrology has been published in the KCDB for Kenya via AFRIMETS, in the field of Length.
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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
1254 key comparisons
26510 CMCs
764 supplementary comparisons