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MEASURAND : SIR equivalent activity of 153Sm

Degrees of equivalence Di and expanded uncertainty Ui (k = 2) expressed in MBq

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MEASURAND : SIR equivalent activity of 153Sm

   
Lab iDiUi
 / MBq/ MBq
NIST3.17.4
PTB-2.05.4
NPL1.05.2
BNM-LNHB-2.03.6
ANSTO-8.216.5

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

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BIPM.RI(II)-K1.Sm-153
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Metrology area, Sub-field Ionizing Radiation, Section II (Measurement of Radionuclides)
Description Activity of radionuclide Sm-153
Time of measurements 1998 -
Status Continuous, approved for equivalence
Final Reports of the comparisons
Most recent report: Metrologia 2005 42 Tech. Suppl. 06008 (for earlier reports, see the tab of participants)
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 05 August 2004, and updated on 18 May 2005 to include ANSTO results.
SIR equivalent activity of the radionuclide 153Sm
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

2004
Metrologia, 2005, 42, Tech. Suppl., 06008

BNM-LNHB

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

2003
Metrologia, 2004, 41, Tech. Suppl., 06012

CMI

Czech Metrology Institute, Czechia, EURAMET

2023

Measurements completed
NIST

National Institute of Standards and Technology, United States, SIM

1998
Metrologia, 2004, 41, Tech. Suppl., 06012

NPL

National Physical Laboratory, United Kingdom, EURAMET

1999
Metrologia, 2004, 41, Tech. Suppl., 06012

PTB

Physikalisch-Technische Bundesanstalt, Germany, EURAMET

1999
Metrologia, 2004, 41, Tech. Suppl., 06012

2022

Measurements completed
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MEASURAND : SIR equivalent activity of 153Sm

Key comparison reference value:
The SIR reference value for this radionuclide is xR = 573.7 MBq, with a standard uncertainty uR = 1.2 MBq, see section 4.1 of Metrologia, 2004, 41, Tech. Suppl., 06012.

The degree of equivalence of each laboratory with respect to the reference value is given by a pair of terms:
Di = (xi - xR) and Ui, its expanded uncertainty (k = 2), both expressed in MBq. With n the number of laboratories, when each laboratory has contributed to the computation of xR.

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 is used for the computation of the pair-wise degrees of equivalence.
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MEASURAND : SIR equivalent activity of 153Sm

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 576800 4700 98-06-23
 PTB 571700 3100 99-04-27
 NPL

574700

 2900 99-07-09
 BNM-LNHB 571700 1100 03-09-11
 ANSTO

565500

8100

04-09-22