Comparison
Comparison close
Results

BIPM.RI(II)-K1.Zn-65 and CCRI(II)-K2.Zn-65

MEASURAND : Equivalent activity of 65Zn

Graph of equivalence

Red squares: participants in BIPM.RI(II)-K1.Zn-65
Blue diamonds: participants in CCRI(II)-K2.Zn-65 (carried out in 2003)
The right hand axis shows approximate values only

Comparison
Comparison close
Results

BIPM.RI(II)-K1.Zn-65 and CCRI(II)-K2.Zn-65

MEASURAND : Equivalent activity of 65Zn

Degrees of equivalence relative to the BIPM.RI(II)-K1.Zn-65 key comparison reference value

Red: participants in BIPM.RI(II)-K1.Zn-65
Blue: participants in CCRI(II)-K2.Zn-65 (carried out in 2003)

Results are presented under A4 printable format in Summary Results (PDF file).

Comparison
Comparison close
BIPM comparison
Linked comparison
SIM.RI(II)-K2.Zn-65
Metrology area, Sub-field Ionizing Radiation, Section II (Measurement of Radionuclides)
Description Activity of Zn-65 solution
Time of measurements 2021 - 2022
Status Protocol complete
References

Protocol_SIM.RI(II)K2-Zn-65

Measurand Activity
0.5 MBq
Transfer device Sample of Zn-65
Comparison type Key Comparison
Consultative Committee CCRI (Consultative Committee for Ionizing Radiation)
Conducted by SIM (Inter-American Metrology System)
Pilot institute LNMRI
Laboratorio Nacional de Metrologia das Radiaçoes Ionizantes, IRD
Brazil
Contact person KARLA PATRÃO

+5521993858835
First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
Pilot laboratory
LNMRI

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

BARC

Bhabha Atomic Research Centre, India, APMP

BFKH

Government Office of the Capital City Budapest, Hungary, EURAMET

CIEMAT

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

CNEA

National Commission of Atomic Energy, Argentina, SIM

FTMC

Center for Physical Sciences and Technology, Lithuania, EURAMET

ININ

Instituto Nacional de Investigaciones Nucleares, Mexico, SIM

NIST

National Institute of Standards and Technology, United States, SIM

NRC

National Research Council, Canada, SIM

POLATOM

Radioisotope Centre Polatom, Poland, EURAMET

SMU

Slovensky Metrologicky Ustav, Slovakia, EURAMET

VINS

Vinca Institute of Nuclear Sciences, Serbia, EURAMET

Comparison
Comparison close
Results

BIPM.RI(II)-K1.Zn-65 and CCRI(II)-K2.Zn-65

MEASURAND : Equivalent activity of 65Zn

  • Key comparison BIPM.RI(II)-K1.Zn-65

Key comparison reference value:
The SIR reference value for this radionuclide is xR = 29740 kBq, with a standard uncertainty uR = 43 kBq. (see Section 4.1 of the Final Report).
The value xi is the equivalent activity for laboratory i.

The degree of equivalence of each laboratory with respect to the key comparison reference value is given by a pair of terms:
Di = (xi - xR) and Ui, its expanded uncertainty (k = 2), both expressed in MBq.
Ui = 2[(1 - 2wi)ui2 + uR2]1/2 when each laboratory has contributed to the calculation of xR.
When required, the degree of equivalence between two laboratories is given by a pair of terms:
Dij =(Di - Dj) = (xi - xj) and Uij, its expanded uncertainty (k = 2), both expressed in MBq. The approximation Uij ~ 2(ui2 + uj2)1/2 may be used for the computation.
  • Linking CCRI(II)-K2.Zn-65 (2003) to BIPM.RI(II)-K1.Zn-65

The value xi is the equivalent activity for laboratory i participant in CCRI(II)-K2.Zn-65 whose ampoule was also measured in the SIR (see Final Report).

The degree of equivalence of laboratory i participant in CCRI(II)-K2.Zn-65 with respect to the key comparison reference value is given by a pair of terms:
Di = (xi - xR) and Ui, its expanded uncertainty (k = 2), both expressed in MBq.
Ui = 2[(1 - 2wi)ui2 + uR2]1/2 when each laboratory has contributed to the calculation of xR.
When required, the degree of equivalence between two laboratories i and j, one participant in BIPM.RI(II)-K1.Zn-65 and one in CCRI(II)-K2.Zn-65, or both participant in CCRI(II)-K2.Zn-65, is given by a pair of terms:
Dij =(Di - Dj) and Uij, its expanded uncertainty (k = 2), both expressed in MBq. The approximation Uij ~ 2(ui2 + uj2)1/2 may be used in the computation of the pair-wise degrees of equivalence.
Comparison
Comparison close
Results

BIPM.RI(II)-K1.Zn-65 and CCRI(II)-K2.Zn-65

  • Key comparison BIPM.RI(II)-K1.Zn-65

MEASURAND : Equivalent activity of 65Zn

xi : result of measurement carried out in the SIR for the sample submitted by laboratory i
ui : combined standard uncertainty of xi

 Lab i xi
/ kBq
ui
/ kBq
Date of measurement
 NIST 29680 190 2001-11-27
 BARC 29130 310 2006-11-29

  • Key comparison CCRI(II)-K2.Zn-65

MEASURAND : Equivalent activity of 65Zn

xi : result of measurement carried out at laboratory i converted to the equivalent activity through the SIR measurements (see Final Report)
ui : combined standard uncertainty of xi

 Lab i xi
/ kBq
ui
/ kBq
Year of measurement
 BEV 29670 330 2003
 CMI 29850 170 2003
 CNEA 30030 130 2003
 ENEA-INMRI 29660 120 2003
 IFIN-HH 29550 150 2003
 IRA 29720 140 2003
 IRMM 29661 68 2003
 KRISS 29780 130 2003
 LNE-LNHB 29810 130 2003
 LNMRI/IRD 30040 160 2003
 MKEH 29590 120 2003
 NMIJ 29700 150 2003
 NMISA 29870 110 2003
 NPL 29990 110 2003
 PTB 29710 130 2003
 SMU 29200 670 2003
 VNIIM 29727 87 2003