Key comparison BIPM.RI(I)-K4 of the absorbed dose to water standards of the NRC, Canada and the BIPM in 60Co gamma radiation

Metrologia ◽  
2021 ◽  
Vol 59 (1A) ◽  
pp. 06001
Author(s):  
C Kessler ◽  
D Burns ◽  
B Downton ◽  
M McEwen
Keyword(s):  
Mutual Recognition ◽  
National Research Council ◽  
Absorbed Dose ◽  
Final Report ◽  
Key Comparison ◽  
Radiation Beam ◽  
Main Text ◽  
Mutual Recognition Arrangement ◽  
Absorbed Dose To Water ◽  
60Co Gamma Radiation

Main text A new key comparison of the standards for absorbed dose to water of the National Research Council of Canada (NRC), Canada and the Bureau International des Poids et Mesures (BIPM) was carried out in the 60Co radiation beam of the BIPM in October 2020. The comparison result, based on the calibration coefficients for three transfer standards and evaluated as a ratio of the NRC and the BIPM standards for absorbed dose to water, is 0.9995 with a combined standard uncertainty of 3.4 parts in 103. The result agrees within the uncertainties with the comparison carried out in 2009. The results are analysed and presented in terms of degrees of equivalence, suitable for entry in the BIPM key comparison database. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

Key comparison BIPM.RI(I)-K1 of the air-kerma standards of the NRC, Canada and the BIPM in 60Co gamma radiation

Metrologia ◽  
2021 ◽  
Vol 59 (1A) ◽  
pp. 06002
Author(s):  
C Kessler ◽  
D Burns ◽  
B Downton ◽  
M McEwen ◽  
E Mainegra-Hing
Keyword(s):  
Mutual Recognition ◽  
Indirect Comparison ◽  
National Research Council ◽  
Final Report ◽  
Key Comparison ◽  
Radiation Beam ◽  
Main Text ◽  
Air Kerma ◽  
Mutual Recognition Arrangement ◽  
60Co Gamma Radiation

Main text A new key comparison of the standards for air kerma of the National Research Council of Canada (NRC), Canada and the Bureau International des Poids et Mesures (BIPM) was carried out in the 60Co radiation beam of the BIPM in October 2020. The comparison result, based on the calibration coefficients for three transfer chambers and expressed as a ratio of the NRC and the BIPM standards for air kerma, is 1.0022 with a combined standard uncertainty of 2.2 parts in 103. The result agrees within the uncertainties with the indirect comparison carried out in 2009. The results are analysed and presented in terms of degrees of equivalence, suitable for entry in the BIPM key comparison database. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

APMP key comparison report of air kerma for 137Cs (APMP.RI(I)-K5)

Metrologia ◽  
2021 ◽  
Vol 59 (1A) ◽  
pp. 06003
Author(s):  
I J Kim ◽  
C-Y Yi ◽  
N C Díaz ◽  
S-W Wang ◽  
Y-C Lin ◽  
...  
Keyword(s):  
Mutual Recognition ◽  
National Metrology Institute ◽  
Final Report ◽  
Key Comparison ◽  
Ionization Chambers ◽  
Main Text ◽  
Air Kerma ◽  
Mutual Recognition Arrangement ◽  
Korea Research Institute ◽  
Cipm Mra

Main text The APMP/TCRI Dosimetry Working Group performed the APMP.RI(I)-K5 key comparison of the air kerma for 137Cs in 2014. Five national metrology institutes (NMIs) took part in the comparison. Two commercial ionization chambers were used as transfer instruments and circulated among the participants. The results showed that the maximum difference between the participants and the Bureau International des Poids et Mesures, evaluated using the comparison data of the linking laboratories of the Korea Research Institute of Standards and Science and the National Metrology Institute of Japan, was less than 0.5% within the expanded uncertainty. This comparison supports the equivalence of the calibration capabilities of the participating laboratories. The results predate the publication of ICRU report 90, therefore, the revision of the data reflecting the effects of the ICRU report 90 on the degrees of equivalences of the participant laboratories is presented in Appendix C. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

Final report on supplementary comparison COOMET.PR-S7: Laser power responsivity (COOMET 599/RU/13)

Metrologia ◽  
2021 ◽  
Vol 58 (1A) ◽  
pp. 02005
Author(s):  
Sergey A Moskalyuk ◽  
Anatoly A Liberman ◽  
Joshua Hadler ◽  
Paul Williams
Keyword(s):  
Laser Power ◽  
Mutual Recognition ◽  
Final Report ◽  
Key Comparison ◽  
Main Text ◽  
Physical Measurements ◽  
Russian Research Institute ◽  
Mutual Recognition Arrangement ◽  
Cipm Mra ◽  
Detector Head

Main text The National Institute of Standards and Technology (NIST), USA and the All-Russian Research Institute for Optical and Physical Measurements (VNIIOFI), Russia agreed in February 2013 to conduct a comparison on the laser power responsivity at wavelengths of 532 nm, 1.064 μm and 10.6 μm. The aim of this comparison is to assess the equivalence of the laser power responsivity between two laboratories. The comparison was conducted within the COOMET regional metrological organization (COOMET 599/RU/13) and was registered in the BIPM Key Comparison DataBase as a supplementary comparison with the identifier COOMET.PR-S7. The comparison was carried out using one detector head for measuring laser power. The detector head was supplied by VNIIOFI (OPHIR 10A). The results of this comparison essentially demonstrated agreement between the results obtained at the two participating laboratories. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCPR, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

Final report on CCQM-K19.2018 key comparison on pH of an unknown borate buffer

Metrologia ◽  
2021 ◽  
Vol 58 (1A) ◽  
pp. 08020
Author(s):  
Toshiaki Asakai ◽  
Igor Maksimov ◽  
Sergey Prokunin ◽  
Daria Vengina ◽  
Narine Oganyan ◽  
...  
Keyword(s):  
Ph Value ◽  
Mutual Recognition ◽  
Borate Buffer ◽  
Final Report ◽  
Key Comparison ◽  
Main Text ◽  
Mutual Recognition Arrangement ◽  
Cipm Mra ◽  
Good Agreement

Main text This key comparison CCQM-K19.2018, as a repetition of the previous study CCQM-K19 from 2005, was performed to evaluate the degree of equivalence of measurement procedures of participating National Metrology Institutes (NMIs) and Designated Institutes (DIs) for the determination of pH of borate buffer solutions. The nominal pH value of the buffer was 9.2 at 25 °C and the suggested measurement temperatures were 5 °C, 15 °C, 25 °C, 37 °C and 50 °C. Good agreement of the results is demonstrated by most participants. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

Subsequent comparison of measurements of neutron source emission rate (2016-17) - CCRI(III)-K9.AmBe.2

Metrologia ◽  
2021 ◽  
Vol 58 (1A) ◽  
pp. 06025
Author(s):  
N J Roberts ◽  
C Thiam ◽  
M Capogni ◽  
L Silvi
Keyword(s):  
Neutron Source ◽  
Emission Rate ◽  
Mutual Recognition ◽  
Final Report ◽  
Key Comparison ◽  
Main Text ◽  
Mutual Recognition Arrangement ◽  
Cipm Mra ◽  
Subsequent Comparison ◽  
Source Emission

Main text To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

A comparison in conventional mass measurements SIM.M.M-S6

Metrologia ◽  
2021 ◽  
Vol 59 (1A) ◽  
pp. 07001
Author(s):  
Fernando García ◽  
Francisco Garcí ◽  
Orlando Pinzón ◽  
Sául García ◽  
Rául Hernandez ◽  
...  
Keyword(s):  
Mutual Recognition ◽  
Final Report ◽  
Mass Measurements ◽  
Key Comparison ◽  
Bilateral Comparison ◽  
Main Text ◽  
Mutual Recognition Arrangement ◽  
Cipm Mra

Main text The present document reports the results of a bilateral comparison in the calibration of mass standards that was carried out between CESMEC (Chile) and CENAMEP AIP (Panamá). This comparison was carried out in the following nominal values: 200 mg, 1 g, 50 g, 200 g, 1 kg, 2 kg, and 10 kg. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

Nitrous oxide in nitrogen (1000μmol/mol)

Metrologia ◽  
2021 ◽  
Vol 58 (1A) ◽  
pp. 08019
Author(s):  
Hai Wu ◽  
Haomiao Ma ◽  
Defa Wang ◽  
Jeongsik Lim ◽  
Jinbok Lee ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Mutual Recognition ◽  
Final Report ◽  
Key Comparison ◽  
Main Text ◽  
Mutual Recognition Arrangement ◽  
Cipm Mra

Main text To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

Final report, on-going key comparison BIPM.QM-K1, ozone at ambient level, comparison with ISCIII, February 2021

Metrologia ◽  
2021 ◽  
Vol 58 (1A) ◽  
pp. 08021
Author(s):  
Joële Viallon ◽  
Faraz Idrees ◽  
Philippe Moussay ◽  
Robert Wielgosz ◽  
Beatriz Nunez-Corcuera ◽  
...  
Keyword(s):  
Mutual Recognition ◽  
National Standard ◽  
Final Report ◽  
Key Comparison ◽  
Main Text ◽  
Amount Of Substance ◽  
Common Reference ◽  
Mutual Recognition Arrangement ◽  
Cipm Mra ◽  
Carlos Iii

Main text As part of the ongoing key comparison BIPM.QM-K1, a comparison has been performed between the ozone national standard of the Instituto de Salud Carlos III (ISCIII) and the common reference standard of the key comparison, maintained by the Bureau International des Poids et Mesures (BIPM). The instruments have been compared over a nominal ozone amount-of-substance fraction range of 0 nmol/mol to 500 nmol/mol To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

Key comparison BIPM.RI(I)-K3 of the air-kerma standards of the ARPANSA, Australia, and the BIPM in medium-energy x-rays

Metrologia ◽  
2021 ◽  
Vol 58 (1A) ◽  
pp. 06024
Author(s):  
D T Burns ◽  
C Kessler ◽  
M Hanlon ◽  
T Bailey ◽  
C Oliver ◽  
...  
Keyword(s):  
Mutual Recognition ◽  
Final Report ◽  
X Rays ◽  
Medium Energy ◽  
Key Comparison ◽  
Main Text ◽  
Air Kerma ◽  
Mutual Recognition Arrangement ◽  
Cipm Mra

Main text To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

Update of the BIPM comparison BIPM.RI(II)-K1.Gd-153 of activity measurements of the radionuclide 153Gd to include the 2020 result of the NIST (United States)

Metrologia ◽  
2021 ◽  
Vol 58 (1A) ◽  
pp. 06027
Author(s):  
C Michotte ◽  
S Courte ◽  
M Nonis ◽  
R Coulon ◽  
S Judge ◽  
...  
Keyword(s):  
United States ◽  
Mutual Recognition ◽  
Reference Value ◽  
Final Report ◽  
Key Comparison ◽  
Main Text ◽  
Activity Measurements ◽  
Mutual Recognition Arrangement ◽  
Cipm Mra ◽  
Degrees Of Equivalence

Main text Since 1988, 3 laboratories have submitted 5 samples of 153Gd to the International Reference System (SIR) for activity comparison at the Bureau International des Poids et Mesures (BIPM), with comparison identifier BIPM.RI(II)-K1.Gd-153. Recently, the NIST (United States) participated in the comparison and the key comparison reference value (KCRV) has been updated. The degrees of equivalence between each equivalent activity measured in the SIR and the updated KCRV have been calculated and the results are given in the form of a table. A graphical presentation is also given. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/. The final report has been peer-reviewed and approved for publication by the CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

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