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
14 JANUARY 2022
AC/DC voltage transfer difference at low voltages - EURAMET
The results of EURAMET.EM-K11.1  have been published in the KCDB.. This is a comparison of in AC/DC voltage transfer difference at low voltages in the field of Electricity and Magnetism, carried out betwween BEV (Austria) and BIM (Bulgaria).
14 JANUARY 2022
Density - COOMET
The comparison COOMET.M.D-S1 has been approved and can be consulted in the KCDB. This is a comparison of density in the field of Mass and related quantities in which 5 state economies participated.
14 JANUARY 2022
Key comparison in neutron emission - CCRI
The comparison CCRI(III)-K9.AmBe.1 has been approved and can be consulted in the KCDB. This is a bilateral comparison of neutron emission, a quantity notably associated with nuclear fission processes, in the field of Ionizing Radiation between NPL (United Kingdom) and NIM (China).. The CCRI(III)-K9.AmBe.1 is linked to CCRI(III)-K9.AmBe via the NPL (United Kingdom) who participated in both comparisons.
13 JANUARY 2022
Key Comparison CCTF-K001.UTC
The results of the key comparison CCTF-K001.UTC are updated on a monthly basis, and the KCDB web gives access to the calculation of the reference time scale UTC (Coordinated Universal Time), carried out by the BIPM, over the last twelve months.
Statistics
Currently in the KCDB there are
257 CIPM MRA participants
1113 key comparisons
25750 CMCs
650 supplementary comparisons