BIPM.RI(II)-K1.Fe-59 and APMP.RI(II)-K2.Fe-59
MEASURAND SIR equivalent activity of 59Fe
Degrees of equivalence represented by Di = (xi - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in MBq.
BIPM.RI(II)-K1.Fe-59 and APMP.RI(II)-K2.Fe-59
MEASURAND SIR equivalent activity of 59Fe
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 |
||
| PTB | -0.030 | 0.069 | ||
| LNE-LNHB | -0.036 | 0.084 | ||
| NMIJ | -0.063 | 0.067 | ||
| BARC | 0.03 | 0.14 | ||
| NRSL/INER | 0.00 | 0.11 | ||
| KRISS | -0.03 | 0.19 | ||
| LNMRI/IRD | 0.86 | 0.23 | ||
| NIM | -0.01 | 0.11 | ||
| NMISA | 0.05 | 0.10 | ||
| OAP | 0.31 | 0.74 |
| Metrology area, Sub-field | Ionizing Radiation, Section II (Measurement of Radionuclides) |
| Description | Activity of radionuclide Fe-59 |
| Time of measurements | 2014 |
| Status | Approved for equivalence |
| Final Reports of the comparisons | |
| References | |
| Measurand | Activity per unit mass in Bq/g |
| Transfer device | Radioactive solution |
| Comparison type | Key Comparison |
| Consultative Committee | CCRI (Consultative Committee for Ionizing Radiation) |
| Conducted by | APMP (Asia Pacific Metrology Programme) |
| Comments | The Final Report was included in the KCDB on 18 December 2019 |
| Pilot institute |
NMIJ AIST
National Metrology Institute of Japan Japan |
| Contact person | A. Yunoki +81 29 861 3470 |
| Pilot laboratory | |
|---|---|
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| ANSTO |
Australian Nuclear Science and Technology Organisation, Australia, APMP |
| BARC |
Bhabha Atomic Research Centre, India, APMP |
| KRISS |
Korea Research Institute of Standards and Science, Korea, Republic of, APMP |
| LNMRI/IRD |
Laboratorio Nacional de Metrologia das Radiacoes Ionizantes, IRD, Brazil, SIM |
| NIM |
National Institute of Metrology, China, APMP |
| NMISA |
National Metrology Institute of South Africa, South Africa, AFRIMETS |
| NRSL/INER |
Institute of Nuclear Energy Research, Chinese Taipei, APMP |
| OAP |
Office of Atoms for Peace, Thailand, APMP |
This page proposes print-out on A4 paper (portrait) of the comparison details (best printed out using a black and white printer).
Please, select items to be printed out, then click on "OK" :
BIPM.RI(II)-K1.Fe-59 and APMP.RI(II)-K2.Fe-59
MEASURAND SIR equivalent activity of 59Fe
Key comparison reference value:
The SIR reference value for this radionuclide is xR = 14 639 kBq with a standard uncertainty uR = 27 kBq, see section 4.1 of the Final Report.
BIPM.RI(I)-K1.Fe-59
The degree of equivalence of each laboratory with respect to the key comparison reference value is given by a pair of terms:
Di = (xi - xR) and Ui, its expanded uncertainty (k = 2), both expressed in MBq, where xi represents the equivalent activity for laboratoryt i and
Ui = 2( (1 - 2wi )ui2 + uR2 )1/2 when each laboratory has contributed to the calculation of xR.
When required, the degree of equivalence between two laboratories i and j can be evaluated by a pair of terms both expressed in MBq:
Dij = Di - Dj , and Uij ,i ts expanded uncertainty (k = 2). To determine Uij the correlation factors must be considered.
Linking APMP.RI(II)-K2.Fe-59 to BIPM.RI(II)-K1.Fe-59
The value xi is the equivalent activity for laboratory i participant in APMP.RI(II)-K2.Fe-59 having been normalized using the value of the linking laboratory, NMIJ (see Final report).
The degree of equivalence of laboratory i participant in APMP.RI(II)-K2.Fe-59 with respect to the key comparison reference value is given by a pair of terms:
Di = (xi - xR) and Ui, its expanded uncertainty (k = 2), both expressed in MBq. Ui is evaluated via the approximation Ui = 2(ui2 + uR2 )1/2 .
These statements make it possible to extend the BIPM.RI(II)-K1.Fe-59 degrees of equivalence to the other participants in the APMP.RI(II)-K2.Fe-59.
BIPM.RI(II)-K1.Fe-59 and APMP.RI(II)-K2.Fe-59
MEASURAND SIR equivalent activity of 59Fe
xi result of measurement carried out in the SIR for the sample submitted by laboratory i
ui combined standard uncertainty of xi
BIPM.RI(II)-K1.Fe-59 - Laboratory measurements
| Labi | xi | ui | date of measurement | |
| kBq | kBq | |||
| PTB | 14 609 | 25 | 2012-04-03 | |
| LNE-LNHB | 14 603 | 36 | 2013-09-30 | |
| NMIJ | 14 576 | 23 | 2014-07-02 |
APMP.RI(II)-K2.Fe-59 - Laboratory measurements
| Labi | xi | ui | year of measurement | |
| kBq | kBq | |||
| BARC | 14 667 | 66 | 2014 | |
| INER | 14 635 | 46 | 2014 | |
| KRISS | 14 610 | 92 | 2014 | |
| LNMRI/IRD | 15500 | 110 | 2014 | |
| NIM | 14 632 | 50 | 2014 | |
| NMISA | 14 691 | 43 | 2014 | |
| OAP | 14 950 | 370 | 2014 |
