Comparison
Comparison close
Results

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.

F-18
Di / kBq
Participating institutes

Results given in absolute values.

 

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/MBq.

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

Results given in relative values.

Comparison
Comparison close
Results

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.

 

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/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.

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

This comparison consists in the determination of calibration factors of NPL secondary standard radionuclide calibrators at individual National Metrology Institutes using absolute standards of F-18.

BIPM.RI(II)-K4.F-18, CCRI(II)-K3.F-18 and APMP.RI(II)-K3.F-18 results are linked to those of BIPM.RI(II)-K1.F-18.

Last update: 07 November 2017

The first results of BIPM.RI(II)-K1.F-18 were published in February 2003 and has since then successively been updated.

The first results of BIPM.RI(II)-K4.F-18 were published in January 2016 and has since then successively been updated.

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
Comparison close
Results

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

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