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.

In case of multiple search, please use ADVANCED SEARCH.
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News
7 NOVEMBER 2025
Key comparison in voltage - BIPM
The most recent results of the continuous key comparison BIPM.EM-K11 have been published in the KCDB including the results obtained with EMI (United Arab Emirates) and BEV (Austria). This is a continuous bi-lateral comparison of voltage measurements at 1 V and 10 V in the field of Electricity and Magnetism in which 27 state economies have participated.
7 NOVEMBER 2025
CCQM key comparison - Gases
The Final report and results of the key comparison CCQM-K175 have been published in the KCDB. This is a key comparison for determining the amount of substance fraction of hydrogen chloride in nitrogen, piloted by the Korea Research Institute of Standards and Science (KRISS) with participants from 7 state economies.
5 NOVEMBER 2025
Humidity - COOMET
3 new CMCs in humidity measurements have been published in the KCDB for Kazakhstan via COOMET, in the field of Thermometry.
31 OCTOBER 2025
Gas analysis - AFRIMETS
2 revised CMCs in gas analysis have been published in the KCDB for South Africa via AFRIMETS, in the field of Chemistry and Biology.
Statistics
Currently in the KCDB there are
258 CIPM MRA participants
1245 key comparisons
26500 CMCs
759 supplementary comparisons