BIPM.RI(II)-K1.Eu-152, CCRI(II)-K2.Eu-152
and COOMET.RI(II)-K2.Eu-152
MEASURAND : SIR equivalent activity of 152Eu
Graph of equivalence
-k1.eu-152_g_feb14.gif)
In Red: participants in BIPM.RI(II)-K1.Eu-152
In Blue: participants in CCRI(II)-K2.Eu-152 (1999)
In Green: participants in COOMET.RI(II)-K2.Eu-152 (2010)
Note: the right hand axis shows approximate values only
BIPM.RI(II)-K1.Eu-152, CCRI(II)-K2.Eu-152
and COOMET.RI(II)-K2.Eu-152
MEASURAND : Equivalent activity of 152Eu
Degrees of equivalence relative to the BIPM.RI(II)-K1.Eu-152 key comparison reference value
-k1.eu-152_does_feb14.gif)
In Black: participants in BIPM.RI(II)-K1.Eu-152
In Blue: participants in CCRI(II)-K2.Eu-152
In Green: participants in COOMET.RI(II)-K2.Eu-152
Results are presented under A4 printable format in Summary Results (PDF file).
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
| Metrology area, Sub-field | Ionizing Radiation, Section II (Measurement of Radionuclides) |
| Description | Activity of radionuclide Eu-152 |
| Time of measurements | 1981 - |
| 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 27 January 2004 CCRI(II)-K2.Eu-152 and COOMET.RI(II)-K2.Eu-152 results are linked to those of BIPM.RI(II)-K1.Eu-152. SIR equivalent activity of the radionuclide 152Eu
|
| 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 |
| CMI |
Czech Metrology Institute, Czechia, EURAMET |
| 1986 |
| CNEA |
National Commission of Atomic Energy, Argentina, SIM |
| 2011 |
| IRA |
Institut Universitaire de Radiophysique Appliquée, Switzerland, EURAMET |
| 1993 |
| LNE-LNHB |
Commissariat à l'énergie atomique / Laboratoire National Henri Becquerel, France, EURAMET |
| 1994 | |
| 2009 |
| LNMRI/IRD |
Laboratorio Nacional de Metrologia das Radiacoes Ionizantes, IRD, Brazil, SIM |
| 1995 | |
| 2000 |
| MKEH |
Hungarian Trade Licensing Office; now BFKH, Hungary, EURAMET |
| 1992 |
| NIST |
National Institute of Standards and Technology, United States, SIM |
| 1982 | |
| 2001 |
| NMIJ AIST |
National Metrology Institute of Japan, Japan, APMP |
| 2019 |
| POLATOM |
Radioisotope Centre Polatom, Poland, EURAMET |
| 1998 |
| PTB |
Physikalisch-Technische Bundesanstalt, Germany, EURAMET |
| 1989 |
| TAEK |
Turkish Atomic Energy Authority, Türkiye, EURAMET |
| 2018 |
| VNIIM |
D.I. Mendeleyev Institute for Metrology, Rosstandart, Russian Federation, COOMET |
| 1998 | |
| 2009 |
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.Eu-152, CCRI(II)-K2.Eu-152
and COOMET.RI(II)-K2.Eu-152
MEASURAND : Equivalent activity of 152Eu
| Key comparison reference value: The SIR reference value for this radionuclide is xR = 14919 kBq, with a standard uncertainty uR = 35 kBq, see section 4.1 of the Final Report dated 2014. The value xi is taken as the equivalent activity for laboratory i. |
| The degree of equivalence of each laboratory 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. 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 is given by a pair of terms: Dij = Di - Dj = (xi - xj) and Uij, its expanded uncertainty (k = 2), both expressed in MBq. The approximation Uij ~ 2(ui2 + uj2)1/2 may be used. |
| The value xi is the equivalent activity for laboratory i participant in CCRI(II)-K2.Eu-152 having been also been measured in the SIR (see Final Report). |
| The degree of equivalence of each laboratory 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. 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, one participant in BIPM.RI(II)-K1.Eu-152 and one in CCRI(II)-K2.Eu-152, or both participant in CCRI(II)-K2.Eu-152, is given by a pair of terms: |
| The value xi is the equivalent activity for laboratory i participant in COOMET.RI(II)-K2.Eu-152 having been normalized to the value of the VNIIM as the linking laboratory. |
| The degree of equivalence of laboratory i participant in COOMET.RI(II)-K2.Eu-152 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 as none of the participants in COOMET.RI(II)-K2.Eu-152 contributed to the computation of the key comparison reference value. |
| When required, the degree of equivalence between two laboratories i and j, one participant in BIPM.RI(II)-K1.Eu-152 and one in COOMET.RI(II)-K2.Eu-152, or one participant in CCRI(II)-K2.Eu-152 and one in COOMET.RI(II)-K2.Eu-152, or both participant in COOMET.RI(II)-K2.Eu-152 is given by a pair of terms expressed in MBq: Dij = Di - Dj and Uij, its expanded uncertainty (k = 2), approximated by Uij ~ 2(ui2 + uj2 - 2ful2)1/2 with l being the linking laboratory when each laboratory is from the COOMET.RI(II)-K2.Eu-152 and f is the correlation coefficient. |
BIPM.RI(II)-K1.Eu-152, CCRI(II)-K2.Eu-152
and COOMET.RI(II)-K2.Eu-152
MEASURAND : Equivalent activity of 152Eu
xi : result of measurement carried out in the SIR for the sample submitted by laboratory i
ui : combined standard uncertainty of xi
| Lab i |
xi / kBq |
ui / kBq |
Date of measurement |
|---|---|---|---|
| NIST | 14892 | 57 | 2001-11-27 |
| VNIIM | 15003 | 50 | 2009-01-12 |
| LNE-LNHB | 14932 | 50 | 2009-04-15 |
| CNEA | 14770 | 81 | 2011-10-12 |
MEASURAND : Equivalent activity of 152Eu
xi : result of measurement carried out in the SIR for the sample submitted by laboratory i (see Final Report)
ui : combined standard uncertainty of xi
| Lab i |
xi / kBq |
ui / kBq |
Date of measurement |
|---|---|---|---|
| BARC | 14830 | 130 | 1999 |
| BEV | 14869 | 109 | 1999 |
| BIPM | 15052 | 75 | 1999 |
| CIEMAT | 14614 | 55 | 1999 |
| CMI-IIR | 14971 | 75 | 1999 |
| ENEA-INMRI | 14657 | 48 | 1999 |
| IFIN-HH | 14880 | 160 | 1999 |
| IRA | 14797 | 30 | 1999 |
| IRMM | 14924 | 57 | 1999 |
| KRISS | 15134 | 32 | 1999 |
| LNMRI/IRD | 14760 | 140 | 1999 |
| MKEH | 14944 | 40 | 1999 |
| NIM | 14853 | 96 | 1999 |
| NMIJ | 15042 | 101 | 1999 |
| NPL | 14970 | 130 | 1999 |
| NRC | 15029 | 33 | 1999 |
| POLATOM | 14884 | 40 | 1999 |
| PTB | 14930 | 52 | 1999 |
xi : result of measurement carried out at laboratory i converted to the equivalent activity through the VNIIM
ui : combined standard uncertainty of xi
| Lab i |
xi / kBq |
ui / kBq |
Date of measurement |
|---|---|---|---|
| BelGIM | 14950 | 110 | 2010 |
| CENTIS-DMR | 15030 | 200 | 2010 |
| SMU | 15020 | 110 |
2010 |
Unless otherwise stated, in the final numbers presented here, rounding has been applied according to ISO 80000-1:2009 Annex B Rule B.
