G Ratel et al 2005 Metrologia 42 06015 doi:10.1088/0026-1394/42/1A/06015
G Ratel1, C Michotte1 and L Johansson2
Show affiliationsIn 2005, the National Physical Laboratory (NPL), UK, submitted an ampoule with about 27 MBq activity of 99Tcm to the International Reference System (SIR) for activity comparison at the Bureau International des Poids et Mesures (BIPM), as part of the BIPM.RI(II)-K1.Tc-99m comparison. Five other national metrology institutes (NMI) have submitted eight samples since 1983. The key comparison reference value (KCRV) has been recalculated to include the latest primary result as this reduces the uncertainty of the evaluation. The degrees of equivalence between each equivalent activity measured in the SIR are given in the form of a matrix for all six NMIs. A graphical presentation is also given.
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 kcdb.bipm.org/.
The final report has been peer-reviewed and approved for publication by Section II of the Consultative Committee for Ionizing Radiation (CCRI(II)), according to the provisions of the Mutual Recognition Arrangement (MRA).
Issue 1A ( 1 January 2005)
G Ratel et al 2005 Metrologia 42 06015
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