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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).
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MEASURAND To add measurand
NOMINAL VALUE To add nominal value
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in (unit).
This is the possibility to place a comment.
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 |
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 |
Results given in relative values.
| 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 |
| Pilot laboratory | |
|---|---|
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| ANSTO |
Australian Nuclear Science and Technology Organisation, Australia, APMP |
| 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 |
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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) /xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kBq/MBq.
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
-K1.F-18 LIM 2021.png)
BIPM.RI(II)-K4.F-18
-K4.F-18 LIM 2021.png)
CCRI(II)-K3.F-18
-K3.F-18 LIM.png)
APMP.RI(II)-K3.F-18
-K3.F-18 LIM.png)
