BIPM.RI(II)-K1.Am-241, 2003 CCRI(II)-K2.Am-241,
and 2006 COOMET.RI(II)-K2.Am-241
MEASURAND : SIR equivalent activity of 241Am
Degrees of equivalence Di and expanded uncertainty Ui (k = 2) expressed in MBq
-k1.am-241_g.gif)
Red squares: participants in BIPM.RI(II)-K1.Am-241
Blue circles: participants in CCRI(II)-K2.Am-241 (2003)
Green triangles: participants in COOMET.RI(II)-K2.Am-241 (2006)
Note: the right-hand axis shows approximate relative values only
BIPM.RI(II)-K1.Am-241, 2003 CCRI(II)-K2.Am-241,
and 2006 COOMET.RI(II)-K2.Am-241
MEASURAND : SIR equivalent activity of 241Am
-k1.am-241_doe.gif)
participants in
BIPM.RI(II)-K2.Am-241
participants in CCRI(II)-K2.Am-241
participants in COOMET.RI(II)-K2.Am-241
Results are presented under A4 printable format in Summary Results (.PDF file).
| Metrology area, Sub-field | Ionizing Radiation, Section II (Measurement of Radionuclides) |
| Description | Activity of radionuclide Am-241 |
| 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 |
| 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 |
| BFKH |
Government Office of the Capital City Budapest, Hungary, EURAMET |
| 1979 |
comparison carried out with MKEH (Hungarian Trade Licensing Office) |
| 2009 |
comparison carried out with MKEH (Hungarian Trade Licensing Office) |
| CMI |
Czech Metrology Institute, Czechia, EURAMET |
| 1979 |
comparison carried out with CMI-IIR (Czech Metrology Institute - Inspectorate for Ionizing Radiation) |
| CNEA |
National Commission of Atomic Energy, Argentina, SIM |
| 2011 |
Report in progress, Draft B |
| LNE-LNHB |
Commissariat à l'énergie atomique / Laboratoire National Henri Becquerel, France, EURAMET |
| 2011 |
| NPL |
National Physical Laboratory, United Kingdom, EURAMET |
| 1980 | |
| 2002 |
| POLATOM |
Radioisotope Centre Polatom, Poland, EURAMET |
| 2009 |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| 1978 |
| VNIIM |
D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET |
| 2006 |
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.Am-241, CCRI(II)-K2.Am-241,
and COOMET.RI(II)-K2.Am-241
MEASURAND : SIR equivalent activity of 241Am
| Key comparison reference value: The SIR reference value for this radionuclide is xR = 2055.8 MBq, with a standard uncertainty uR = 2.8 MBq, see section 4.1 of the Final Report dated November 2007. |
| The degree of equivalence of laboratory i 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. With n the number of laboratories,  when each laboratory has contributed to the computation of xR. |
|
The value xi is the equivalent activity for laboratory i participant in CCRI(II)-K2.Am-241 having been normalized using the SIR measurement of the NPL undiluted solution of the CCRI(II)-K2.Am-241 comparison. |
| The degree of equivalence of laboratory i participant in CCRI(II)-K2.Am-241 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. The approximation Ui = 2(ui2 + uR2)1/2 is used in the Matrix of equivalence as none of these laboratories contributed to the computation of xR. |
|
The value xi is the equivalent activity for laboratory i participant in COOMET.RI(II)-K2.Am-241 having been normalized to the SIR measurement of the VNIIM solution of the COOMET.RI(II)-K2.Am-241 comparison. |
| The degree of equivalence of laboratory i participant in COOMET.RI(II)-K2.Am-241 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. The approximation Ui = 2(ui2 + uR2)1/2 is used in the Matrix of equivalence as none of these laboratories contributed to the computation of xR. |
These statements make it possible to extend the BIPM.RI(II)-K1.Am-241 Matrix of equivalence to all participants in the CCRI(II)-K2.Am-241 and the COOMET.RI(II)-K2.Am-241 comparisons.
BIPM.RI(II)-K1.Am-241, 2003 CCRI(II)-K2.Am-241,
and 2006 COOMET.RI(II)-K2.Am-241
MEASURAND : SIR equivalent activity of 241Am
xi : result of measurement carried out in the SIR for the sample submitted by laboratory i
ui : combined standard uncertainty of xi
-k1.am-241_lim1.gif)
xi : result of measurement carried out at laboratory i linked to the SIR through the NPL mother solution
ui : combined standard uncertainty of xi
-k1.am-241_lim2.gif)
xi : result of measurement carried out at laboratory i converted to the equivalent activity through the VNIIM
ui : combined standard uncertainty of xi
-k1.am-241_lim3.gif)
