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 Zn-65 solution |
| Time of measurements | 2021 - 2022 |
| Status | Report in progress, draft A |
| References | |
| Measurand | Activity 0.5 MBq |
| Transfer device | Sample of Zn-65 |
| Comparison type | Key Comparison |
| Consultative Committee | CCRI (Consultative Committee for Ionizing Radiation) |
| Conducted by | SIM (Inter-American Metrology System) |
| Pilot institute |
LNMRI
Laboratorio Nacional de Metrologia das Radiaçoes Ionizantes, IRD Brazil |
| Contact person | KARLA PATRÃO +5521993858835 |
| Pilot laboratory | |
|---|---|
| LNMRI |
Laboratorio Nacional de Metrologia das Radiaçoes Ionizantes, IRD, Brazil, SIM |
| BARC |
Bhabha Atomic Research Centre, India, APMP |
| BFKH |
Government Office of the Capital City Budapest, Hungary, EURAMET |
| CIEMAT |
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Spain, EURAMET |
| CNEA |
National Commission of Atomic Energy, Argentina, SIM |
| FTMC |
Center for Physical Sciences and Technology, Lithuania, EURAMET |
| ININ |
Instituto Nacional de Investigaciones Nucleares, Mexico, SIM |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| NRC |
National Research Council, Canada, SIM |
| POLATOM |
Radioisotope Centre Polatom, Poland, EURAMET |
| SMU |
Slovensky Metrologicky Ustav, Slovakia, EURAMET |
| VINS |
Vinca Institute of Nuclear Sciences, Serbia, EURAMET |
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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 |
