Comparison
Comparison close
Results

BIPM.RI(II)-K1.Co-60

 

MEASURAND    SIR equivalent activity of Co-60

 

Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kBq.

Co-60
Di / kBq
Participating institutes

Results given above in absolute values.

 

BIPM.RI(II)-K1.Co-60

 

MEASURAND    SIR equivalent activity of Co-60

 

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.

Co-60
Di / (kBq/MBq)
Participating institutes

Results given above in relative values.

Comparison
Comparison close
Results

BIPM.RI(II)-K1.Co-60

 

MEASURAND    SIR equivalent activity of Co-60

 

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
IRA-METAS -26 17
NMISA 35 32
POLATOM -23 80
NMIJ -13 16
JRC -24 34
IFIN-HH 38 48
NIST 20 28
BEV -6 34
CNEA 7 52
BARC 121 66
NRC 2 18
NIM -11 38
PTB -6 30
TAEK -20 180
VNIIM -1 14
Participating institutes
BIPM.RI(II)-K1.Co-60

Results given above in absolute values.

 

 

BIPM.RI(II)-K1.Co-60

 

MEASURAND    SIR equivalent activity of Co-60

 

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-METAS -3.6 2.4
NMISA 5 4.6
POLATOM -3 11
NMIJ -1.8 2.2
JRC -3.4 4.8
IFIN-HH 5.4 6.8
NIST 2.9 3.9
BEV -0.8 4.9
CNEA 1 7.3
BARC 17 9
NRC 0.3 2.5
NIM -1.5 5.3
PTB -0.8 4.2
TAEK -2 25
VNIIM -0.1 2.0
Participating institutes
BIPM.RI(II)-K1.Co-60

Results given above in relative values.

Comparison
Comparison close
BIPM comparison
Linked comparison
BIPM.RI(II)-K1.Co-60
Metrology area, Sub-field Ionizing Radiation, Section II (Measurement of Radionuclides)
Description Activity of radionuclide Co-60
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
Most recent results published on 29 September 2021, revised on 24 November 2021.
The status for not yet completed comparisons is indicated in "Participants".
 
Pilot institute BIPM
Bureau International des Poids et Mesures
BIPM - International Organization
Contact person Carine Michotte

+33 (0) 1 45 07 70 85
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

ANSTO

Australian Nuclear Science and Technology Organisation, Australia, APMP

Report in progress, draft A

BARC

Bhabha Atomic Research Centre, India, APMP

Report in progress, Draft A

BEV

Bundesamt für Eich- und Vermessungswesen, Austria, EURAMET

BFKH

Government Office of the Capital City Budapest, Hungary, EURAMET

comparison carried out with OMH (Országos Mérésügyi Hivatal)

CIEMAT

Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Spain, EURAMET

CMI

Czech Metrology Institute, Czechia, EURAMET

comparison carried out with CMI-IIR (Czech Metrology Institute - Inspectorate for Ionizing Radiation)

CNEA

National Commission of Atomic Energy, Argentina, SIM

ENEA-INMRI

Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti, Italy, EURAMET

Report in progress, draft A

IFIN-HH

"Horia Hulubei" National Institute of Research and Development for Physics and Nuclear Engineering, Romania, EURAMET

IRA

Institut Universitaire de Radiophysique Appliquée, Switzerland, EURAMET

JRC

Joint Research Centre, European Union, EURAMET

comparison carried out with IRMM (Institute for Reference Materials and Measurements)

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

Report in progress, Draft A

LNMRI/IRD

Laboratorio Nacional de Metrologia das Radiacoes Ionizantes, IRD, Brazil, SIM

Report in progress, Draft A

NIM

National Institute of Metrology, China, APMP

Report in progress, draft A

NIST

National Institute of Standards and Technology, United States, SIM

Report in progress, Draft A

NMIJ AIST

National Metrology Institute of Japan, Japan, APMP

NMISA

National Metrology Institute of South Africa, South Africa, AFRIMETS

Report in progress, draft A

comparison carried out with CSIR-NML (Council for Scientific and Industrial Research, National Metrology Laboratory)

NPL

National Physical Laboratory, United Kingdom, EURAMET

Measurements complete

NRC

National Research Council, Canada, SIM

Report in progress, Draft A

POLATOM

Radioisotope Centre Polatom, Poland, EURAMET

Report in progress, Draft A

PTB

Physikalisch-Technische Bundesanstalt, Germany, EURAMET

Report in progress, Draft A

PTKMR-BATAN

Center for Technology of Radiation Safety and Metrology, National Nuclear Energy Agency, Indonesia, APMP

comparison carried out with P3KRBiN (Pusat Penelitian & Pengembangan Keselamatan Radiasi & Biomedika Nuklir)

SMU

Slovensky Metrologicky Ustav, Slovakia, EURAMET

Report in progress, Draft A

TAEK

Turkish Atomic Energy Authority, Türkiye, EURAMET

VNIIM

D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET


Comparison
Comparison close
Results

BIPM.RI(II)-K1.Co-60

 

MEASURAND    SIR equivalent activity of Co-60

 

The key comparison reference value xR for this radionuclide is estimated to be

 

xR = 7062.6 kBq with a standard uncertainty, uR = 2.5 kBq                  (see Section 4.1 of the 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 kBq, 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(II)-K1.Co-60

 

MEASURAND    SIR equivalent activity of Co-60

 

 

xi        result of measurement carried out in the SIR for the sample submitted by laboratory iLabi

u(xi)     combined standard uncertainty of xi