BIPM.RI(II)-K1.Cs-134 and APMP.RI(II)-K2.Cs-134
MEASURAND SIR equivalent activity of Cs-134
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kBq.
Results given in absolute values.
BIPM.RI(II)-K1.Cs-134 and APMP.RI(II)-K2.Cs-134
MEASURAND SIR equivalent activity of Cs-134
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kBq.
Results given in relative values.
BIPM.RI(II)-K1.Cs-134 and APMP.RI(II)-K2.Cs-134
MEASURAND SIR equivalent activity of Cs-134
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kBq.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
kBq |
kBq |
kBq |
||
| NIST | 18 | 62 | ||
| JRC | -76 | 77 | ||
| BKFH | 8 | 62 | ||
| LNE-LNHB | 1 | 42 | ||
| NMIJ | -19 | 41 | ||
| BARC | 20 | 95 | ||
| CNEA | 67 | 95 | ||
| IFIN-HH | 99 | 111 | ||
| BEV | -33 | 142 | ||
| IRA | -92 | 106 | ||
| NMISA | -22 | 58 | ||
| POLATOM | -16 | 77 | ||
| NRC | 8 | 85 | ||
| LNMRI-IRD | -36 | 77 | ||
| PTB | -42 | 53 | ||
| INER | 55 | 42 | ||
| VNIIM | -29 | 56 |
Results given in absolute values.
BIPM.RI(II)-K1.Cs-134 and APMP.RI(II)-K2.Cs-134
MEASURAND SIR equivalent activity of Cs-134
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kBq/MBq.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
kBq/MBq |
kBq/MBq |
kBq/MBq |
||
| NIST | 1.8 | 6.1 | ||
| JRC | -7.5 | 7.6 | ||
| BKFH | 0.8 | 6.1 | ||
| LNE-LNHB | 0.1 | 4.2 | ||
| NMIJ | -1.9 | 4.0 | ||
| BARC | 2 | 9 | ||
| CNEA | 7 | 9 | ||
| IFIN-HH | 10 | 11 | ||
| BEV | -3 | 14 | ||
| IRA | -9 | 10 | ||
| NMISA | -2.2 | 5.8 | ||
| POLATOM | -1.6 | 7.6 | ||
| NRC | 0.8 | 8.4 | ||
| LNMRI-IRD | -3.6 | 7.6 | ||
| PTB | -4.2 | 5.2 | ||
| INER | 5.4 | 4.1 | ||
| VNIIM | -2.9 | 5.5 |
Results given in relative values.
| Metrology area, Sub-field | Ionizing Radiation, Section II (Measurement of Radionuclides) |
| Description | Activity of radionuclide Cs-134 |
| Time of measurements | 1975 - |
| 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 08 July 2003 Most recent update: 13 January 2023 Earlier reports can be found in the participants list. |
| 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 |
| 1978 | |
| BARC |
Bhabha Atomic Research Centre, India, APMP |
| 2005 |
| BEV |
Bundesamt für Eich- und Vermessungswesen, Austria, EURAMET |
| 2008 |
| CIEMAT |
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Spain, EURAMET |
| 2001 |
| CMI-IIR |
Czech Metrology Institute - Inspectorate for Ionizing Radiation, Czechia, EURAMET |
| 1978 |
| CNEA |
National Commission of Atomic Energy, Argentina, SIM |
| 2005 |
| IFIN-HH |
"Horia Hulubei" National Institute of Research and Development for Physics and Nuclear Engineering, Romania, EURAMET |
| 2006 |
| IRA |
Institut Universitaire de Radiophysique Appliquée, Switzerland, EURAMET |
| 2009 |
| IRMM |
Institute for Reference Materials and Measurements, European Union, EURAMET |
| 2004 |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| 1996 |
| LNE-LNHB |
Commissariat à l'énergie atomique / Laboratoire National Henri Becquerel, France, EURAMET |
| 2005 |
| LNMRI/IRD |
Laboratorio Nacional de Metrologia das Radiacoes Ionizantes, IRD, Brazil, SIM |
| 2015 |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| 2002 |
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| 2005 |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| 2010 |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| 2008 |
Abandonned |
| NRC |
National Research Council, Canada, SIM |
| 2014 |
| OMH |
Országos Mérésügyi Hivatal; Subsequently MKEH, now BKFH, Hungary, EURAMET |
| 2004 |
| P3KRBiN |
Pusat Penelitian & Pengembangan Keselamatan Radiasi & Biomedika Nuklir, Indonesia, APMP |
| 1984 |
| POLATOM |
Radioisotope Centre Polatom, Poland, EURAMET |
| 2014 |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| 2016 | |
| 2004 |
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BIPM.RI(II)-K1.Cs-134 and APMP.RI(II)-K2.Cs-134
MEASURAND SIR equivalent activity of Cs-134
The key comparison reference value xR for this radionuclide is estimated to be
xR = 10 123 kBq with a standard uncertainty uR = 10 kBq
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence are both expressed in kBq, where xi is the equivalent activity for laboratory i.
The Degrees of equivalence are also given in relative terms by Di = (xI - xR) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kBq/MBq.
BIPM.RI(II)-K1.Cs-134 and APMP.RI(II)-K2.Cs-134
MEASURAND SIR equivalent activity of Cs-134
xi measurement value submitted by laboratory i, Labi
ui combined standard uncertainty of xi
BIPM.RI(II)-K1.Cs-134
| Labi | xi | ui | Date of measurement | |
| kBq | kBq | |||
| NIST | 10 141 | 31 | 2002-06-21 | |
| JRC | 10 047 | 39 | 2004-01-20 | |
| BKFH | 10 131 | 31 | 2004-12-08 | |
| LNE-LNHB | 10 124 | 20 | 2005-04-13 | |
| NMIJ | 10 104 | 19 | 2005-04-20 | |
| BARC | 10 143 | 48 | 2005-07-20 | |
| CNEA | 10 190 | 48 | 2005-09-12 | |
| IFIN-HH | 10 222 | 56 | 2006-11-21 | |
| BEV | 10 090 | 70 | 2008-11-24 | |
| IRA | 10 031 | 52 | 2009-02-25 | |
| NMISA | 10 101 | 29 | 2010-08-05 | |
| POLATOM | 10 107 | 39 | 2014-01-09 | |
| NRC | 10 131 | 43 | 2014-03-18 | |
| LNMRI-IRD | 10 087 | 39 | 2015-12-15 | |
| PTB | 10 081 | 26 | 2016-08-17 |
APMP.RI(II)-K2.Cs-134
| Labi | xi | u(xi) | Date of measurement | |
| kBq | kBq | |||
| VNIIM | 10 094 | 26 | 2005 | |
| INER | 10 178 | 18 | 2005 | |
