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CIPM MRA PARTICIPANTS
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CIPM MRA PARTICIPANTS
Calibration and Measurement Capabilities – CMCs
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Key and supplementary comparisons
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News
17 FEBRUARY 2026
Key comparison in air kerma - EURAMET
The results of the key comparison EURAMET.RI(I)-K5.2 linked to BIPM.RI(I)-K5 have been published in the KCDB. This is a comparison of air kerma in Cs-137 radiation protection beams in the field of Ionizing radiation, piloted by Swedish Radiation Safety Authority (SSM), Sweden in which five state economies participated.
16 FEBRUARY 2026
Key Comparison in Thermometry - Realization of the ITS-90
The Final report and results of the bilateral key comparison CCT-K9.4 linked to CCT-K9 have been published in the KCDB. This is a comparison of the realization of the ITS-90 at the freezing point of zinc, 692.677 K between the National Physical Laboratory (NPL), United Kingdom and National Research Council (NRC), Canada.
11 FEBRUARY 2026
Time - APMP
2 new and 1 revised CMCs in Time measurements have been published in the KCDB for Hong Kong, China and Singapore via APMP, in the field of Time and Frequency.
11 FEBRUARY 2026
Key comparison for abundance of ozone in dry air - CCQM
The Final reports and new results issued from the continuous comparison BIPM.QM-K1 have recently been published in the KCDB, including the results from Instituto Nacional de Ecología y Cambio Climático (INECC), Mexico in October 2024. This comparison underpins the determination of the concentration of ozone in air, a current health issue linked to air pollution.
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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
1263 key comparisons
26529 CMCs
766 supplementary comparisons