| Metrology area, Sub-field | Ionizing Radiation, Section II (Measurement of Radionuclides) |
| Description | Activity of radionuclide Tc-99 |
| Time of measurements | 2024 - |
| Status | Continuous, approved for equivalence |
| Final Reports of the comparisons | |
| Measurand | ESIR equivalent activity |
| Comparison type | Key Comparison |
| Consultative Committee | CCRI (Consultative Committee for Ionizing Radiation) |
| Conducted by | BIPM (Bureau International des Poids et Mesures) |
| Comments | The Extended International System of Reference (ESIR) was established at the BIPM to evaluate the international equivalence of standardization capabilities for radionuclide solutions. This service supports National Metrology Institutes (NMIs) and Designated Institutes (DIs) under the CIPM MRA framework. The ESIR specifically addresses radionuclides that cannot be measured using the International System of Reference (SIR). This key comparison adresses 99Tc standardization. |
| Pilot institute |
BIPM
Bureau International des Poids et Mesures BIPM - International Organization |
| Contact person | Romain Coulon |
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