BIPM.RI(II)-K1.Zn-65
MEASURAND Equivalent activity of Zn-65
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 Zn-65
Degrees of equivalence represented by Di = (xI - xR) / xR and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in KBq/MBq.
Results given in relative values
BIPM.RI(II)-K1.Zn-65
MEASURAND Equivalent activity of Zn-65
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 |
||
| BARC | -0.60 | 0.61 | ||
| LNMRI-IRD | 0.16 | 0.40 | ||
| LNE-LNHB | -0.01 | 0.18 |
Results given in absolute values
MEASURAND Equivalent activity of Zn-65
Degrees of equivalence represented by Di = (xI - xR) / 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 |
||
| BARC | -20 | 21 | ||
| LNMRI-IRD | 5 | 13 | ||
| LNE-LNHB | -0.5 | 6.0 |
Results given in relative values
| Metrology area, Sub-field | Ionizing Radiation, Section II (Measurement of Radionuclides) |
| Description | Activity of radionuclide Zn-65 |
| Time of measurements | 1977 - |
| Status | Continuous, approved for equivalence |
| Final Reports of the comparisons | |
| Measurand | SIR equivalent activity |
| Transfer device | Radioactive solution |
| 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 First results published on 28 September 2004 Last update: 30 January 2024 |
| 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 |
| 1977 |
| BARC |
Bhabha Atomic Research Centre, India, APMP |
| 2006 |
| LNE-LNHB |
Commissariat à l'énergie atomique / Laboratoire National Henri Becquerel, France, EURAMET |
| 1982 | |
| 1999 | |
| 2018 |
| LNMRI/IRD |
Laboratorio Nacional de Metrologia das Radiacoes Ionizantes, IRD, Brazil, SIM |
| 2015 |
|
| 2022 |
Measurements in progress |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| 1999 | |
| 2001 |
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| 1994 |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| 1979 |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| 1987 |
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BIPM.RI(II)-K1.Zn-65
MEASURAND Equivalent activity of Zn-65
Key comparison reference value: the SIR key comparison reference value xR for this radionuclide is xR = 29 730 kBq with a standard uncertainty uR = 39 kBq
(see Section 4.1 of the Final report : Metrologia 2024 61 Tech. Supp. 06004). 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.
BIPM.RI(II)-K1.Zn-65
MEASURAND Equivalent activity of Zn-65
xi result of measurement carried out in the SIR for the sample submitted by laboratory i, Labi
ui combined standard uncertainty of xi
| Labi | xi | ui | Date of measurement | |
| kBq | kBq | |||
| BARC | 29130 | 310 | 2006-11-29 | |
| LNMRI-IRD | 29890 | 200 | 2015-12-15 | |
| LNE-LNHB | 29715 | 88 | 2018-12-14 |
