MEASURAND : SIR equivalent activity of 153Sm
Degrees of equivalence Di and expanded uncertainty Ui (k = 2) expressed in MBq
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MEASURAND : SIR equivalent activity of 153Sm
| Lab i | Di | Ui |
| / MBq | / MBq | |
| NIST | 3.1 | 7.4 |
| PTB | -2.0 | 5.4 |
| NPL | 1.0 | 5.2 |
| BNM-LNHB | -2.0 | 3.6 |
| ANSTO | -8.2 | 16.5 |
Results are presented under A4 printable format in Summary Results (.PDF file).
| Metrology area, Sub-field | Ionizing Radiation, Section II (Measurement of Radionuclides) |
| Description | Activity of radionuclide Sm-153 |
| Time of measurements | 1998 - |
| Status | Continuous, approved for equivalence |
| Final Reports of the comparisons | |
| Measurand | SIR equivalent activity |
| Transfer device | Radioactive solution |
| Comparison type | Key Comparison |
| Consultative Committee | CCRI (Consultative Committee for Ionizing Radiation) |
| Conducted by | BIPM (Bureau International des Poids et Mesures) |
| Comments | SIR: Système International de Référence, International Reference System Results published on 05 August 2004, and updated on 18 May 2005 to include ANSTO results. SIR equivalent activity of the radionuclide 153Sm |
| Pilot institute |
BIPM
Bureau International des Poids et Mesures BIPM - International Organization |
| Contact person | Carine Michotte +33 (0) 1 45 07 70 85 |
| Pilot laboratory | |
|---|---|
| BIPM |
Bureau International des Poids et Mesures, BIPM - International Organization, N/A |
| ANSTO |
Australian Nuclear Science and Technology Organisation, Australia, APMP |
| 2004 |
| BNM-LNHB |
Bureau National de Métrologie - Laboratoire National Henri Becquerel, France, EURAMET |
| 2003 |
| CMI |
Czech Metrology Institute, Czechia, EURAMET |
| 2023 |
Report in progress, draft B |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| 1998 |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| 1999 |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| 1999 | |
| 2022 |
Measurements completed |
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Please, select items to be printed out, then click on "OK" :
MEASURAND : SIR equivalent activity of 153Sm
| Key comparison reference value: The SIR reference value for this radionuclide is xR = 573.7 MBq, with a standard uncertainty uR = 1.2 MBq, see section 4.1 of Metrologia, 2004, 41, Tech. Suppl., 06012. |
| The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms: Di = (xi - xR) and Ui, its expanded uncertainty (k = 2), both expressed in MBq. With n the number of laboratories,  when each laboratory has contributed to the computation of xR. |
| The degree of equivalence between two laboratories is given by a pair of terms: Dij = Di - Dj = (xi - xj) and Uij, its expanded uncertainty (k = 2), both expressed in MBq. The approximation Uij ~ 2(ui2 + uj2)1/2 is used for the computation of the pair-wise degrees of equivalence. |
MEASURAND : SIR equivalent activity of 153Sm
xi : result of measurement carried out in the SIR for the sample submitted by laboratory i
ui : combined standard uncertainty of xi
| Lab i | xi / kBq |
ui / kBq |
Date of measurement |
| NIST | 576800 | 4700 | 98-06-23 |
| PTB | 571700 | 3100 | 99-04-27 |
| NPL |
574700 |
2900 | 99-07-09 |
| BNM-LNHB | 571700 | 1100 | 03-09-11 |
| ANSTO |
565500 |
8100 |
04-09-22 |
