CIPM MRA COMPARISON REPORTS

KEY COMPARISON

BIPM.RI(II)-K1.Mn-54 (NPL 2024)

Activity of radionuclide Mn-54
R. Coulon , C. Michotte , S. Courte , M. Nonis , V. Gressier , S. Collins , R. Shearman , J. Keightley , A. Pearce , N. Ramirez ... , H. Mohamud , J.M. Crook , A. Tribolet , S. Kolmogorova
Published on 28/09/2026 - © 2026 R. Coulon et al
Citation R. Coulon et al 2026 CIPM MRA Comparison reports 06014

Abstract

Since 1976, 17 laboratories have submitted 44 samples of 54Mn 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.Mn-54. Recently, the NPL (United Kingdom)  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 CCRI, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).