| BIPM.EM-K10 |
DC voltage, Josephson standards 1991 - |
|
Electricity and Magnetism |
DC Voltage and Current
Continuous, approved for equivalence
Key Comparison |
| BIPM.EM-K11 |
DC voltage, Zener diode 1992 - |
|
Electricity and Magnetism |
DC Voltage and Current
Continuous, approved for equivalence
Key Comparison |
| BIPM.EM-K13 |
Resistance standards 1993 - |
|
Electricity and Magnetism |
Resistance
Continuous, approved for equivalence
Key Comparison |
| BIPM.EM-K14.a |
Comparison of capacitors 2002 - |
|
Electricity and Magnetism |
Capacitance Frequency: 1592 Hz and 1000 Hz Continuous, approved for equivalence
Key Comparison |
| BIPM.EM-K14.b |
Comparison of capacitors 2002 - |
|
Electricity and Magnetism |
Capacitance Frequency: 1592 Hz and 1000 Hz Continuous, approved for equivalence
Key Comparison |
| BIPM.L-K10 |
Comparison of the frequencies of Helium-Neon lasers at wavelength 633 nm 1988 - 2000 |
|
Length |
Laser Frequencies
Approved for equivalence
Phys. Rev. Lett., 2000, 85, 18, 3797-3800 Appl. Phys. B, 2001, 72, 221-226 Key Comparison |
| BIPM.QM-K1 |
Ozone at ambient level 2007 - |
|
Chemistry and Biology |
Gases
Continuous, approved for equivalence
Key Comparison |
| BIPM.QM-K2.a |
Carbon dioxide in dry air 2024 - |
|
Chemistry and Biology |
Gases
Measurements in progress Key Comparison |
| BIPM.RI(I)-K1 |
Measurement of air kerma for Cobalt 60 1975 - |
|
Ionizing Radiation |
Section I (x and gamma rays, electrons) Radiation type: Co-60 gamma rays Continuous, approved for equivalence
Key Comparison |
| BIPM.RI(I)-K2 |
Measurement of air kerma for low energy x-rays 1966 - |
|
Ionizing Radiation |
Section I (x and gamma rays, electrons)
Radiation type: x-rays Continuous, approved for equivalence
Key Comparison |
| BIPM.RI(I)-K3 |
Measurement of air kerma for medium energy x-rays 1975 - |
|
Ionizing Radiation |
Section I (x and gamma rays, electrons)
Radiation type: x-rays Continuous, approved for equivalence
Key Comparison |
| BIPM.RI(I)-K4 |
Measurement of absorbed dose to water for Cobalt 60 1993 - |
|
Ionizing Radiation |
Section I (x and gamma rays, electrons)
Radiation type: Co-60 Continuous, approved for equivalence
Key Comparison |
| BIPM.RI(I)-K5 |
Measurement of air kerma for Caesium 137 1994 - |
|
Ionizing Radiation |
Section I (x and gamma rays, electrons) Radiation type: Cs-137 gamma rays Continuous, approved for equivalence
Key Comparison |
| BIPM.RI(I)-K6 |
Measurement of absorbed dose to water for high-energy photon beams 2009 - |
|
Ionizing Radiation |
Section I (x and gamma rays, electrons) Radiation type: accelerator beams - high energy photons Continuous, approved for equivalence
Key Comparison |
| BIPM.RI(I)-K7 |
Measurement of air kerma for mammography beams 2007 - |
|
Ionizing Radiation |
Section I (x and gamma rays, electrons) Radiation type: mammography radiation beams Continuous, approved for equivalence
Key Comparison |
| BIPM.RI(I)-K8 |
Measurement of reference air kerma rate for HDR Ir-192 brachytherapy sources 2009 - |
|
Ionizing Radiation |
Section I (x and gamma rays, electrons) Radiation type: HDR Ir-192 sealed brachytherapy sources Continuous, approved for equivalence
Key Comparison |
| BIPM.RI(I)-K9 |
Measurement of absorbed dose to water for medium energy x-rays 2016 - |
|
Ionizing Radiation |
Section I (x and gamma rays, electrons)
Radiation type: x-rays Continuous, approved for equivalence
Key Comparison |
| BIPM.RI(I)-S1 |
Measurement of air kerma in mammography beams 2012 |
|
Ionizing Radiation |
Section I (x and gamma rays, electrons) Radiation type: mammography radiation beams from 25 kV to 35 kV Approved Supplementary Comparison |
| BIPM.RI(II)-K1.Ac-225 |
Activity of radionuclide Ac-225 2019 - |
|
Ionizing Radiation |
Section II (Measurement of Radionuclides)
Continuous Key Comparison |
| BIPM.RI(II)-K1.Ag-110m |
Activity of radionuclide Ag-110m 1983 - |
|
Ionizing Radiation |
Section II (Measurement of Radionuclides)
Continuous, approved for equivalence
Key Comparison |
