CIPM MRA COMPARISON REPORTS

KEY COMPARISON

BIPM.RI(II)-K5.Tc-99 (2026 update)

Activity of radionuclide Tc-99

R. Coulon , T. Choteau , M.N. Amiot , C. Bobin , A. Bourgouin , R. Galea , K. Moore , I. Nandram

Citation R. Coulon et al 2026 CIPM MRA Comparison reports 06016

https://doi.org/10.59161/NBND2353

Authors

Romain Coulon

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

Tiphaine Choteau Bureau International des Poids et Mesures (BIPM) BIPM - International Organization

Marie-Noëlle Amiot

https://orcid.org/0000-0002-5409-1572 Commissariat à l'énergie atomique / Laboratoire National Henri Becquerel (LNE-LNHB) France

Christophe Bobin Commissariat à l'énergie atomique / Laboratoire National Henri Becquerel (LNE-LNHB) France

Alexandra Bourgouin

https://orcid.org/0000-0001-6429-4122 National Research Council (NRC) Canada

Raphael Galea

https://orcid.org/0000-0003-1639-3788 National Research Council (NRC) Canada

Kimberly Moore National Research Council (NRC) Canada

Ian Nandram National Research Council (NRC) Canada

Abstract

The Extended International System of Reference (ESIR) was established at the BIPM to evaluate the international equivalence of standardization capabilities for radionuclide solutions. This service supports National Metrology Institutes (NMIs) and Designated Institutes (DIs) under the CIPM MRA framework. The ESIR specifically addresses radionuclides that cannot be measured using the International System of Reference (SIR). This report details the key comparison BIPM.RI(II).K5 of ⁹⁹Tc, featuring results from the LNE-LNHB and NRC.

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).

Download

Back to the CIPM MRA Comparison reports