Comparison
Comparison close
Results

BIPM.RI(II)-K1.Cu-64 and BIPM.RI(II)-K4.Cu-64

 

MEASURAND           Equivalent activity of Cu-64

 

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

Cu-64
Di / MBq
Participating institutes

Results given in absolute values.

 

BIPM.RI(II)-K1.Cu-64 and BIPM.RI(II)-K4.Cu-64

 

MEASURAND           Equivalent activity of Cu-64

 

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

Cu-64
Di / (kBq/MBq)
Participating institutes

Results given in relative values.

Comparison
Comparison close
Results

BIPM.RI(II)-K1.Cu-64 and BIPM.RI(II)-K4.Cu-64

 

MEASURAND           Equivalent activity of Cu-64

 

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 0.41 0.80
CMI-IIR -1.2 1.4
NPL 0.0 1.0
LNE-LNHB 0.3 1.2
ENEA-INMRI -0.2 1.4
NIST -0.4 1.2
POLATOM 0.6 1.2
Participating institutes
BIPM.RI(II)-K1.Cu-64
BIPM.RI(II)-K4.Cu-64

Results given in absolute values.

 

BIPM.RI(II)-K1.Cu-64 and BIPM.RI(II)-K4.Cu-64

 

MEASURAND           Equivalent activity of Cu-64

 

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
PTB 5.1 9.9
CMI-IIR -15 18
NPL 1 12
LNE-LNHB 3 14
ENEA-INMRI -2 17
NIST -6 15
POLATOM 7 14
Participating institutes
BIPM.RI(II)-K1.Cu-64
BIPM.RI(II)-K4.Cu-64

Results given in relative values.

Comparison
Comparison close
BIPM comparison
Linked comparison
BIPM.RI(II)-K4.Cu-64
Metrology area, Sub-field Ionizing Radiation, Section II (Measurement of Radionuclides)
Description Activity of radionuclide Cu-64
Time of measurements 2016 -
Status Continuous, approved for equivalence
Final Reports of the comparisons
References

BIPM.RI(II)-K4.Cu-64 Technical Protocol

Measurand SIR-TI equivalent activity in kBq
Transfer device SIR Transfer Instrument
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
SIR-TI: SIR Transfer Instrument

Most recent results published on 4 January 2022
The status for not yet completed comparisons is indicated in "Participants".

First results published on 22 November 2017
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

KRISS

Korea Research Institute of Standards and Science, Korea, Republic of, APMP

Measurements complete

NIST

National Institute of Standards and Technology, United States, SIM

NRC

National Research Council, Canada, SIM

POLATOM

Radioisotope Centre Polatom, Poland, EURAMET

PTB

Physikalisch-Technische Bundesanstalt, Germany, EURAMET

Measurements complete

Comparison
Comparison close
Results

BIPM.RI(II)-K1.Cu-64 and BIPM.RI(II)-K4.Cu-64

 

MEASURAND           Equivalent activity of Cu-64

 

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

 

xR = 80.99 MBq with a standard uncertainty uR = 30.34 MBq

 

(see the most recent KCRV updateSection 4 of Metrologia 2013 50 Tech. Suppl. 06021).

 

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(II)-K1.Cu-64 and BIPM.RI(II)-K4.Cu-64

 

MEASURAND           Equivalent activity of Cu-64

 

xi   result of measurement carried out in the SIR for the sample submitted by laboratory i, Labi

ui   combined standard uncertainty of xi

 

BIPM.RI(II)-K1.Cu-64

 

BIPM.RI(II)-K4.Cu-64