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

F-18
Di / kBq
Participating institutes

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

F-18
Di / (kBq/MBq)
Participating institutes

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CRI(II)-K3.F-18 and APMP.RI(II)-K3.F-18  were archived on 25 January 2023

BIPM.RI(II)-K1.F-18, BIPM.RI(II)-K4.F-18, CCRI(II)-K3.F-18 and APMP.RI(II)-K3.F-18

 

MEASURAND           Equivalent activity of F-18

 

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 0.02 0.11
BEV 0.10 0.32
CIEMAT -0.08 0.19
PTB 0.023 0.093
LNE-LNHB -0.09 0.12
VNIIM -0.10 0.19
NPL 0.02 0.11
ENEA-INMRI 0.075 0.091
NMISA 0.03 0.19
NIST 0.00 0.12
POLATOM 0.03 0.17
ANSTO -0.14 0.48
CMI-IIR -0.28 0.24
INER -0.16 0.30
Participating institutes
BIPM.RI(II)-K1.F-18
BIPM.RI(II)-K4.F-18
CCRI(II)-K3.F-18
APMP.RI(II)-K3.F-18

Results given in absolute values.

MEASURAND           Equivalent activity of F-18

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
IRA 1.2 7.0
BEV 6 21
CIEMAT -5 12
PTB 1.5 6.1
LNE-LNHB -5.9 7.7
VNIIM -6 12
NPL 1.2 7.3
ENEA-INMRI 4.9 6.0
NMISA 2 12
NIST -0.1 8.0
POLATOM 2 11
ANSTO -9 31
CMI-IIR -19 16
INER -11 20
Participating institutes
BIPM.RI(II)-K1.F-18
BIPM.RI(II)-K4.F-18
CCRI(II)-K3.F-18
APMP.RI(II)-K3.F-18

Results given in relative values.

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Linked comparison
CCRI(II)-K3.F-18
Metrology area, Sub-field Ionizing Radiation, Section II (Measurement of Radionuclides)
Description Calibration factors using absolute standards of F-18
Time of measurements 2001
Status Approved for equivalence
Final Reports of the comparisons
Measurand Calibration factor
Transfer device Ionisation chamber
Comparison type Key Comparison
Consultative Committee CCRI (Consultative Committee for Ionizing Radiation)
Conducted by CCRI (Consultative Committee for Ionizing Radiation)
Comments Results of this key comparison are older than 20 years and were thus deleted from the KCDB in January 2023 following the decision of the CCRI(II) at its 17th meeting in 2003 (see pages 37 and 38 of the CCRI Report of its 18th meeting in 2003) to gradually phase out old data to ensure that the KCDB maintains its currency.

For the same reason, this comparison was placed in the KCDB archives on 25 January 2023.

SIR equivalent activity of the radionuclide 18F
Pilot institute NPL
National Physical Laboratory
United Kingdom
Contact person M.J. Woods

+44 (0) 20 8943 6425
First Name Last Name
wwww@ww.www +356719836 Institute 1 Institute 1 Khmelnitskiy
Pilot laboratory
NPL

National Physical Laboratory, United Kingdom, EURAMET

ANSTO

Australian Nuclear Science and Technology Organisation, Australia, APMP

CMI-IIR

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

LNE-LNHB

Commissariat à l'énergie atomique / Laboratoire National Henri Becquerel, France, EURAMET

NIST

National Institute of Standards and Technology, United States, SIM

NRSL/INER

Institute of Nuclear Energy Research, Chinese Taipei, APMP

Comparison
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Results

CCRI(II)-K3.F-18 and APMP.RI(II)-K3.F-18  were archived on 25 January 2023

BIPM.RI(II)-K1.F-18, BIPM.RI(II)-K4.F-18, CCRI(II)-K3.F-18 and APMP.RI(II)-K3.F-18

 

MEASURAND           Equivalent activity of F-18

 

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

 

xR = 15 293 kBq with a standard uncertainty uR = 19 kBq

 

(see Section 7 of the BIPM.RI(I)-K4.F-18 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

CCRI(II)-K3.F-18 and APMP.RI(II)-K3.F-18  were archived on 25 January 2023

BIPM.RI(II)-K1.F-18, BIPM.RI(II)-K4.F-18, CCRI(II)-K3.F-18 and APMP.RI(II)-K3.F-18

 

MEASURAND           Equivalent activity of F-18

 

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.F-18

 

BIPM.RI(II)-K4.F-18

 

CCRI(II)-K3.F-18

 

APMP.RI(II)-K3.F-18