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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.

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News
6 DECEMBER 2024
Key Comparison in Electrochemistry - CCQM
The final report and results of the key comparison CCQM-K91.2022 have been published in the KCDB. This is a comparison on the measurement of the acidity function of an unknown phthalate bufffer at zero chloride molality, piloted by Instituto Nacional de Metrologia, Qualidade e Tecnologia (INMETRO), Brazil in which 13 state economies participated.
6 DECEMBER 2024
Key Comparison of Air Kerma for Low-Energy X-Rays – BIPM
Publication of the most recent results of BIPM.RI(I)-K2 key comparison of the air-kerma standards of the Physikalisch-Technische Bundesanstalt (PTB), Germany and the BIPM in low-energy x-rays, completed in 2024.
6 DECEMBER 2024
Key Comparison of Air Kerma for Medium-Energy X-Rays – BIPM
New results issued from the continuous BIPM.RI(I)-K3 have been published in the KCDB, including results obtained with Physikalisch-Technische Bundesanstalt (PTB), Germany in 2024. This is a comparison of the measurement of air kerma for medium energy X-rays in the field of Ionizing Radiation in which 15 state economies participated.
6 DECEMBER 2024
Key Comparison of Air Kerma for Cs-137 – BIPM
New results issued from the continuous BIPM.RI(I)-K5 have been published in the KCDB, including results obtained with Glowny Urzad Miar, Central Office of Measures (GUM), Poland. This is a comparison of the measurement of air kerma for Cs-137 in the field of Ionizing Radiation with 16 participating state economies.
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Statistics
AFRIMETS APMP COOMET EURAMET GULFMET SIM
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Currently in the KCDB there are
255 CIPM MRA participants
1199 key comparisons
26207 CMCs
709 supplementary comparisons