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 First results published on 05 August 2004 Most recent update: 18 May 2005 Earlier reports and the status of not yet completed resulsts can be found in the participants list. Results older than 20 years are no longer considered valid (see pages 37 and 38 of the CCRI Report of its 18th meeting in 2003). |
| 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 |
