CIPM MRA COMPARISON REPORTS

BIPM.RI(II)-K1.Tb-161 (POLATOM 2025)

Activity of radionuclide Tb-161

R. Coulon , C. Michotte , S. Courte , V. Gressier , N. Lisowska , J. Marganiec-Gałązka , A. Listkowska , P. Saganowski , T. Zbigniew , E. Kolakowska

Citation R. Coulon et al 2026 CIPM MRA Comparison reports 06012

https://doi.org/10.59161/FIKZ3846

Authors

Romain Coulon

https://orcid.org/0000-0001-9851-0890 Bureau International des Poids et Mesures (BIPM) BIPM - International Organization

Carine Michotte

https://orcid.org/0009-0008-2133-6765 Bureau International des Poids et Mesures (BIPM) BIPM - International Organization

Sammy Courte Bureau International des Poids et Mesures (BIPM) BIPM - International Organization

Vincent Gressier

https://orcid.org/0000-0001-5826-1666 Bureau International des Poids et Mesures (BIPM) BIPM - International Organization

Natalia Lisowska

https://orcid.org/0009-0006-7561-4084 Radioisotope Centre Polatom (POLATOM) Poland

Justyna Marganiec-Gałązka

https://orcid.org/0000-0002-0327-1629 Radioisotope Centre Polatom (POLATOM) Poland

Anna Listkowska

https://orcid.org/0000-0001-9745-1497 Radioisotope Centre Polatom (POLATOM) Poland

Pawel Saganowski

https://orcid.org/0000-0002-4074-6339 Radioisotope Centre Polatom (POLATOM) Poland

Tymiński Zbigniew

https://orcid.org/0000-0001-9977-4150 Radioisotope Centre Polatom (POLATOM) Poland

Ewa Kolakowska

https://orcid.org/0000-0003-2463-4633 Radioisotope Centre Polatom (POLATOM) Poland

Abstract

Since 2019, 3 laboratories have submitted 3 samples of ¹⁶¹Tb 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.Tb-161. Recently, the POLATOM (Poland) 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 representation is also given.

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).

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