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
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BIPM comparison
Linked comparison
BIPM.RI(II)-K1.Zn-65
Metrology area, Sub-field Ionizing Radiation, Section II (Measurement of Radionuclides)
Description Activity of radionuclide Zn-65
Time of measurements 1977 -
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

Results published on 28 September 2004
Last update: 09 February 2015

CCRI(II)-K2.Zn-65 results are linked to those of BIPM.RI(II)-K1.Zn-65

Equivalent activity of the radionuclide 65Zn

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

BARC

Bhabha Atomic Research Centre, India, APMP

BNM-LNHB

Bureau National de Métrologie - Laboratoire National Henri Becquerel, France, EURAMET

CMI-IIR

Czech Metrology Institute - Inspectorate for Ionizing Radiation, Czechia, EURAMET

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

Measurements in progress

NIST

National Institute of Standards and Technology, United States, SIM

NMIJ AIST

National Metrology Institute of Japan, Japan, APMP

NPL

National Physical Laboratory, United Kingdom, EURAMET

OMH

Országos Mérésügyi Hivatal; Subsequently MKEH, now BKFH, Hungary, EURAMET

P3KRBiN

Pusat Penelitian & Pengembangan Keselamatan Radiasi & Biomedika Nuklir, Indonesia, APMP

PTB

Physikalisch-Technische Bundesanstalt, Germany, 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