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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
CMC statistics
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
13 MAY 2025
Supplementary Comparison in mass standards - SIM
The Final report of the supplementary comparison SIM.M.M-S18 has been approved and published in the KCDB. This is a bilateral comparison of mass standards, between Centro Nacional de Metrologia (CENAM) Mexico and Centro Nacional de Metrología de Panama AIP (CENAMEP AIP) Panama.
6 MAY 2025
Dosimetry - EURAMET
2 new CMCs in dosimetry measurements have recently been published in the KCDB for Italy via EURAMET, in the field of Ionizing Radiation.
6 MAY 2025
Length - APMP
5 new and 2 revised CMCs in dimensional metrology and laser frequencies have recently been published in the KCDB for China via APMP, in the field of Length.
30 APRIL 2025
CCQM key comparison - Organics
The Final report and results of the key comparison CCQM-K148.b have been published in the KCDB. This is a key comaprison for determining the mass fraction of oxytetracycline, piloted by the BIPM with participants from 20 state economies.
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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
1224 key comparisons
26147 CMCs
732 supplementary comparisons