Abstract
Since 1978, seven national metrology institutes (NMI), the BIPM and another laboratory have submitted twenty samples of known activity of 109Cd to the International Reference System (SIR) for activity comparison at the Bureau International des Poids et Mesures. The activities ranged from about 2.5 MBq to 210 MBq. The degrees of equivalence between each equivalent activity measured in the SIR and the key comparison reference value (KCRV) have been calculated and the results are given in the form of a matrix for four NMIs and the BIPM. A graphical presentation is also given.The results of a CCRI international comparison, identifier CCRI(II)-K2.Cd-109 held in 1986 that have been approved for provisional equivalence for this radionuclide, have been linked to the SIR results. This has enabled three NMIs to update their results and a further eight NMIs and one international laboratory, the IRMM, to be linked to the SIR.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 BIPMkey comparison database kcdb.bipm.org/.The final report has been peer-reviewed and approved for publicationby Section II of the Consultative Committee for Ionizing Radiation (CCRI(II)), comparison identifier BIPM.RI(II)-K1.Cd-109, according to theprovisions of the Mutual Recognition Arrangement (MRA).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
