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
22 MARCH 2024
Electricity and magnetism - AFRIMETS
2 new CMCs in DC voltage measurement have recently been published in the KCDB for Morocco via AFRIMETS, in the field of Electricity and magnetism.
22 MARCH 2024
Key comparison for abundance of ozone in dry air
Results issued from the continuous BIPM.QM-K1 comparison have recently been published in the KCDB, including the results obtained with NMC, A*Star (Singapore) in July 2022. This comparison underpins the determination of the concentration of ozone in air, a current health issue linked to air pollution.
19 MARCH 2024
Optical frequency and wavelength standards - CCL
The most recent results of the ongoing comparison CCL-K11 have been published in the KCDB. This is a comparison of optical frequency and wavelength standards within the field of Length coordinated by Bundesamt für Eich- und Vermessungswesen (BEV) Austria. Results obtained for LNE-LCM/Cnam (France) and SMU (Slovak Republic) are reported.
18 MARCH 2024
Key comparison for abundance of ozone in dry air
New results issued from the continuous BIPM.QM-K1 comparison have recently been published in the KCDB, including the results obtained with EMPA (WMO) in June 2023, NIM (China) in October 2023, and NPL (United Kingdom) in June 2022.  This comparison underpins the determination of the concentration of ozone in air, a current health issue linked to air pollution.
Statistics
Currently in the KCDB there are
251 CIPM MRA participants
1173 key comparisons
25885 CMCs
687 supplementary comparisons