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
12 DECEMBER 2025
Key comparison in fluid flow - CCM
The Final report and results of the key comparison CCM.FF-K2.2011 have been published in the KCDB. This comparison of the measurement of the flow rate of a hydrocarbon liquid and water was piloted by VSL, Netherlands, with participants from eight state economies.
11 DECEMBER 2025
Electrochemical analysis - EURAMET
1 new CMC in electrochemical analysis has been published in the KCDB for Türkiye via EURAMET, in the field of Chemistry and Biology.
11 DECEMBER 2025
Sound in air - EURAMET
4 new and 9 revised CMCs in acoustics (sound in air) have been published in the KCDB for Poland via EURAMET, in the field of Acoustics, Ultrasound and Vibration.
11 DECEMBER 2025
Key comparison for gaseous standards of CO2
The most recent results issued from the continuous key comparison BIPM.QM-K2.b have been published in the KCDB, including the results obtained with Slovensky Metrologicky Ustav (SMU), Slovakia in November 2025. This comparison underpins the capabilities of participants to value assign the amount fraction of CO2 in air with a method that ensures traceability of the measurements to the SI.
Statistics
Currently in the KCDB there are
259 CIPM MRA participants
1259 key comparisons
26532 CMCs
765 supplementary comparisons