BIPM.RI(I)-K1.Co-56
MEASURAND Activity concentration of Co-56
There is no graphical representation of equivalence, please see the table of degrees of equivalence for CMI-IIR represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, in kBq.
BIPM.RI(I)-K1.Co-56
MEASURAND Activity concentration of Co-56
There is no graphical representation of equivalence, please see the table of degrees of equivalence for CMI-IIR represented by Di = (xI - xR)/xR and its expanded uncertainty Ui at a 95 % level of confidence, in kBq/MBq.
BIPM.RI(I)-K1.Co-56
MEASURAND Activity concentration of Co-56
Degrees of equivalence represented by Di = (xI - xR) and its expanded uncertainty Ui at a 95 % level of confidence, both expressed in kBq.
-Co-56 Graph Abs Jun-24.gif)
Results given in absolute values.
BIPM.RI(I)-K1.Co-56
MEASURAND Activity concentration of Co-56
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.
-Co-56 Graph Rel Jun-24.gif)
Results given in relative values.
| Metrology area, Sub-field | Ionizing Radiation, Section II (Measurement of Radionuclides) |
| Description | Activity of radionuclide Co-56 |
| Time of measurements | 1991 - |
| 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 Results published on 14 November 2002, then updated on 30 March 2010 Results older than 20 years are no longer published in the KCDB (see pages 37 and 38 of the CCRI Report of its 18th meeting in 2003) |
| 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 |
| BNM-LNHB |
Bureau National de Métrologie - Laboratoire National Henri Becquerel, France, EURAMET |
| 1998 |
| CMI-IIR |
Czech Metrology Institute - Inspectorate for Ionizing Radiation, Czechia, EURAMET |
| 2006 |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| 1991 |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| 1995 |
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BIPM.RI(I)-K1.Co-56
MEASURAND Activity concentration of Co-56
Key comparison reference value:
The SIR reference value for this radionuclide is xR = 5066 kBq, with a standard uncertainty uR = 14 kBq.
(see section 4.1 of the Final Report dated 23 March 2010)
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 kBq, 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(I)-K1.Co-56
MEASURAND Activity concentration of Co-56
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 | |||
| CMI-IIR | 5029 | 28 | 2006-05-04 |
