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CIPM MRA PARTICIPANTS
All data listed in the KCDB have been reviewed and approved within the CIPM Mutual Recognition Arrangement
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CIPM MRA PARTICIPANTS
CMC statistics
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 MARCH 2025
Electric and Magnetic fields - EURAMET
A revised CMC in Electric and Magnetic field measurements has recently been published in the KCDB for Czechia, via EURAMET in the field of Electricity and Magnetism.
14 MARCH 2025
Supplementary Comparison in Time measurements - APMP
The Final report of the supplementary comparison APMP.TF-S1 has been approved and published in the KCDB. This is a comparison of standards for the calibration of stopwatches, piloted by National Metrology Institute of Malaysia (NMIM), Malaysia, with participants from Australia and Indonesia.
13 MARCH 2025
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 with EAA, Austria in August 2023. This comparison underpins the determination of the concentration of ozone in air, a current health issue linked to air pollution.
13 MARCH 2025
Accelerator Photon Beams - BIPM
The results of the BIPM.RI(I)-K6 comparison carried out between the BIPM and GUM (Poland) have been published in the KCDB. The comparison concerns the determination of absrobed dose to water in accelerator photon beams and support quality and traceability in radiotherapy.
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Statistics
AFRIMETS APMP COOMET EURAMET GULFMET SIM
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Currently in the KCDB there are
258 CIPM MRA participants
1218 key comparisons
26115 CMCs
724 supplementary comparisons