Comparison
Comparison close
Results

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.

Cd-109
Di / MBq
Participating institutes

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)/xand its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kBq/MBq.

Cd-109
Di / (kBq/MBq)
Participating institutes

Results given in relative values.

Comparison
Comparison close
Results

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
Participating institutes
BIPM.RI(II)-K1.Cd-109

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)/xand 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
Participating institutes
BIPM.RI(II)-K1.Cd-109

Results given in relative values.

Comparison
Comparison close
BIPM comparison
Linked comparison
CCRI(II)-K2.Cd-109.2021
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

Comparison protocol

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
First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
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

Comparison
Comparison close
Results

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 kBq with a standard uncertainty uR = 26 kBq

 

(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) /xand its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kBq/MBq.

Comparison
Comparison close
Results

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