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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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News
14 FEBRUARY 2025
Key comparison - CCEM
The Final report of the key comparison CCEM.RF-K5.c.CL has been published in the KCDB. This is a comparison for scattering parameters and reflection coefficients by broad-band method, piloted by the National Metrology Institute of Japan (NMIJ) Japan in which 15 state economies paricipated.
13 FEBRUARY 2025
Electricity and Magnetism - AFRIMETS
3 new CMCs have recently been published in the KCDB for Egypt and Ethiopia via AFRIEMTS, in the field of Electricity and Magnetism.
7 FEBRUARY 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 UBA, Germany in July 2023 and KRISS, Korea in September 2024. This comparison underpins the determination of the concentration of ozone in air, a current health issue linked to air pollution.
7 FEBRUARY 2025
Key Comparison of air kerma in Co-60
The most recent results of BIPM.RI(I)-K1 have been published in the KCDB, including new data issued from National Institute of Standards and Technology (NIST), United States. This is a continuous comparison of air kerma in Co-60, covering 26 state economies. Air kema is a frequently used  parameter for radiation therapy and diagnostics.
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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
1215 key comparisons
26124 CMCs
717 supplementary comparisons