BIPM.RI(II)-K1.F-18 and BIPM.RI(II)-K4.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 MBq.
Results given in absolute values
MEASURAND Equivalent activity of F-18
Degrees of equivalence represented by Di = (xI - xR) / xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in KBqMBq.
Results given in relative values
BIPM.RI(II)-K1.F-18 and BIPM.RI(II)-K4.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 MBq.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
MBq |
MBq |
MBq |
||
| BEV | 0.09 | 0.32 | ||
| CIEMAT | -0.08 | 0.19 | ||
| PTB | 0.019 | 0.094 | ||
| LNE-LNHB | -0.09 | 0.12 | ||
| VNIIM | -0.10 | 0.19 | ||
| NPL | 0.01 | 0.11 | ||
| ENEA-INMRI | 0.071 | 0.092 | ||
| NMISA | 0.03 | 0.19 | ||
| NIST | -0.01 | 0.12 | ||
| POLATOM | 0.03 | 0.17 | ||
| NRC | 0.03 | 0.11 |
Results given in absolute values
MEASURAND Equivalent activity of F-18
Degrees of equivalence represented by Di = (xI - xR) / xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in KBqMBq.
| LABi | Di | Uneg,i | Upos,i | |
|---|---|---|---|---|
kBq/MBq |
kBq/MBq |
kBq/MBq |
||
| BEV | 6 | 21 | ||
| CIEMAT | -5 | 12 | ||
| PTB | 1.2 | 6.1 | ||
| LNE-LNHB | -6.2 | 7.7 | ||
| VNIIM | -7 | 12 | ||
| NPL | 0.9 | 7.2 | ||
| ENEA-INMRI | 4.6 | 6.0 | ||
| NMISA | 2 | 12 | ||
| NIST | -0.4 | 8.0 | ||
| POLATOM | 2 | 11 | ||
| NRC | 2.3 | 6.9 |
Results given in relative values
| Metrology area, Sub-field | Ionizing Radiation, Section II (Measurement of Radionuclides) |
| Description | Activity of radionuclide F-18 |
| Time of measurements | 2014 - |
| Status | Continuous, approved for equivalence |
| Final Reports of the comparisons | |
| References | |
| Measurand | SIR-TI equivalent activity in kBq |
| Transfer device | SIR Transfer Instrument |
| 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 Most recent results published on 25 January 2023 The status for not yet completed comparisons is indicated in "Participants". 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. |
| Pilot institute |
BIPM
Bureau International des Poids et Mesures BIPM - International Organization |
| Contact person | Carine Michotte +33 (0) 1 45 07 70 85 |
| Pilot laboratory | |
|---|---|
| BIPM |
Bureau International des Poids et Mesures, BIPM - International Organization, N/A |
| ANSTO |
Australian Nuclear Science and Technology Organisation, Australia, APMP |
| 2017 |
| BARC |
Bhabha Atomic Research Centre, India, APMP |
| CNEA |
National Commission of Atomic Energy, Argentina, SIM |
| ENEA-INMRI |
Istituto Nazionale di Metrologia delle Radiazioni Ionizzanti, Italy, EURAMET |
| 2014 |
| IFIN-HH |
"Horia Hulubei" National Institute of Research and Development for Physics and Nuclear Engineering, Romania, EURAMET |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| 2022 |
Measurements complete |
| LNMRI/IRD |
Laboratorio Nacional de Metrologia das Radiacoes Ionizantes, IRD, Brazil, SIM |
| NIM |
National Institute of Metrology, China, APMP |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| 2016 |
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| 2015 |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| 2014 |
| NRC |
National Research Council, Canada, SIM |
| 2017 |
| POLATOM |
Radioisotope Centre Polatom, Poland, EURAMET |
| 2016 |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| 2021 |
Measurements complete |
| VNIIM |
D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET |
| 2014 |
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BIPM.RI(II)-K1.F-18 and BIPM.RI(II)-K4.F-18
MEASURAND Equivalent activity of F-18
Key comparison reference value: the SIR key comparison reference value xR for this radionuclide is xR = 15 297 kBq with a standard uncertainty uR = 18 kBq
(see Section 7 of the BIPM.RI(I)-K4.F-18 Final Report). The value xi is taken as the equivalent activity for a laboratory i.
The degree of equivalence of each laboratory i 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, and
Ui = 2((1 - 2wi)ui2 + u2R)1/2, where wi is the weight of laboratory i contributing to the calculation of xR.
The degrees of equivalence are also given in relative terms by Di = (xI - xR) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kBq/MBq.
Linking BIPM.RI(II)-K4.F-18 to BIPM.RI(II)-K1.F-18
The value xi is the SIRTI equivalent activity for laboratory i participant in BIPM.RI(II)-K4.F-18 multiplied by the linking factor to BIPM.RI(II)-K1.F-18.
The degree of equivalence of laboratory i participant in BIPM.RI(II)-K4.F-18 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. The approximation Ui = 2(ui2 + uR2)1/2 is used in the following table.
These statements make it possible to extend the BIPM.RI(II)-K1.F-18 matrices of equivalence to all participants in the BIPM.RI(II)-K4.F-18 comparisons
BIPM.RI(II)-K1.F-18 and BIPM.RI(II)-K4.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
| Labi | xi | ui | Date of measurement | |
| kBq | kBq | |||
| BEV | 15 390 | 160 | 2002-11-12 | |
| CIEMAT | 15 216 | 97 | 2004-05-13 | |
| PTB | 15 316 | 50 | 2005-04-13 | |
| LNE-LNHB | 15 203 | 62 | 2010-07-05 |
BIPM.RI(II)-K4.F-18
| Labi | xi | ui | Date of measurement | |
| kBq | kBq | |||
| VNIIM | 15 197 | 97 | June 2014 | |
| NPL | 15 311 | 52 | Sept. 2014 | |
| ENEA-INMRI | 15 368 | 49 | Oct. 2014 | |
| NMISA | 15 328 | 96 | Nov. 2015 | |
| NIST | 15 291 | 64 | May 2016 | |
| POLATOM | 15 323 | 88 | Oct. 2016 | |
| NRC | 15 332 | 56 | June 2017 |
