BIPM.RI(I)-K1.Cd-109
MEASURAND Activity concentration of Cd-109
Degrees of equivalence represented by Di = (xi - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in MBq.
Results given in absolute values.
BIPM.RI(I)-K1.Cd-109
MEASURAND Activity concentration of Cd-109
Degrees of equivalence represented by Di = (xi - xR)/xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kBq/MBq.
Results given in relative values.
BIPM.RI(I)-K1.Cd-109
MEASURAND Activity concentration of Cd-109
Degrees of equivalence represented by Di = (xi - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in MBq.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
MBq |
MBq |
MBq |
||
| PTB | 32 | 58 | ||
| NIST | 30 | 100 | ||
| LNE-LNHB | -100 | 160 |
Results given in absolute values.
BIPM.RI(I)-K1.Cd-109
MEASURAND Activity concentration of Cd-109
Degrees of equivalence represented by Di = (xi - xR)/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 |
||
| PTB | 4.0 | 7.1 | ||
| NIST | 4 | 12 | ||
| LNE-LNHB | -12 | 20 |
Results given in relative values.
| Metrology area, Sub-field | Ionizing Radiation, Section II (Measurement of Radionuclides) |
| Description | Activity concentration of the same Cd-109 solution |
| Time of measurements | 2020 - 2021 |
| Status | Report in progress, draft A |
| References | |
| Measurand | Activity concentration 250 kBq/g |
| Transfer device | Radioactive solution |
| Comparison type | Key Comparison |
| Consultative Committee | CCRI (Consultative Committee for Ionizing Radiation) |
| Conducted by | CCRI (Consultative Committee for Ionizing Radiation) |
| Pilot institute |
BIPM
Bureau International des Poids et Mesures BIPM - International Organization |
| Contact person | Carine Michotte +33 (0) 1 45 07 70 85 |
| Additional |
| Pilot laboratory | |
|---|---|
| BIPM |
Bureau International des Poids et Mesures, BIPM - International Organization, N/A |
| BARC |
Bhabha Atomic Research Centre, India, APMP |
| BEV |
Bundesamt für Eich- und Vermessungswesen, Austria, EURAMET |
| BFKH |
Government Office of the Capital City Budapest, Hungary, EURAMET |
| CIEMAT |
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Spain, EURAMET |
| CMI |
Czech Metrology Institute, Czechia, EURAMET |
| ENEA-INMRI |
Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti, Italy, EURAMET |
| IFIN-HH |
"Horia Hulubei" National Institute of Research and Development for Physics and Nuclear Engineering, Romania, EURAMET |
| ININ |
Instituto Nacional de Investigaciones Nucleares, Mexico, SIM |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| LNE-LNHB |
Commissariat à l'énergie atomique / Laboratoire National Henri Becquerel, France, EURAMET |
| LNMRI/IRD |
Laboratorio Nacional de Metrologia das Radiacoes Ionizantes, IRD, Brazil, SIM |
| NIM |
National Institute of Metrology, China, APMP |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| NRC |
National Research Council, Canada, SIM |
| POLATOM |
Radioisotope Centre Polatom, Poland, EURAMET |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| SMU |
Slovensky Metrologicky Ustav, Slovakia, EURAMET |
| TENMAK-NUKEN |
Nuclear Energy Research Institute, Türkiye, EURAMET |
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BIPM.RI(I)-K1.Cd-109
MEASURAND Activity concentration of Cd-109
The key comparison reference value xR for this radionuclide is estimated to be
xR = 8138 MBq with a standard uncertainty uR = 26 MBq
(see Section 4 of the BIPM.RI(I)-K1.Cd-109 Final Report).
Degrees of equivalence represented by Di = (xi - xR) and its expanded uncertainty Ui at a 95 % level of confidence are both expressed in MBq, 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(I)-K1.Cd-109
MEASURAND Activity concentration of Cd-109
xi result of measurement carried out in the SIR for the sample submitted by laboratory i, Labi
ui combined standard uncertainty of xi
| Labi | xi | ui | Date of measurement | |
| MBq | MBq | |||
| PTB | 8170 | 34 | 2004-09-24 | |
| NIST | 8168 | 44 | 2004-11-22 | |
| LNE-LNHB | 8042 | 78 | 2012-02-29 |
