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 |
||
IRA | -73 | 90 | ||
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 |
||
IRA | -9 | 11 | ||
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