Abstract. In 2005, the Physikalisch-Technische Bundesanstalt (PTB) submitted a sample of known activity of ¹¹¹In to the International Reference System (SIR). The value of the activity submitted was about 28 MBq. This key comparison result is the first result for Germany in the matrix of degrees of equivalence in the key comparison database that now contains six results, identifier BIPM.RI(II)-K1.In-111.

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 CIPM Mutual Recognition Arrangement (MRA).