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
18 MARCH 2026
IMPORTANT - Maintenance
The KCDB web will be unavailable due to maintenance on Tuesday 18 March from 13:30 to 15:30 Paris time (UTC+1).
17 MARCH 2026
Organic analysis - SIM
5 revised CMCs for the analysis of cachaca (alcoholic beverage) have been published for Brazil via SIM, in the field of Chemistry and Biology.
17 MARCH 2026
Frequency - APMP
2 new CMCs in frequency measurements have been published in the KCDB for Singapore via APMP, in the field of Time and Frequency.
16 MARCH 2026
Mass standards and pressure - India
1 new and 14 revised CMCs in mass standards and pressure measurements have been published in the KCDB for India via APMP, in the field of Mass and related quantities.
Statistics
Currently in the KCDB there are
258 CIPM MRA participants
1263 key comparisons
26392 CMCs
767 supplementary comparisons