Abstract. This report summarizes the results of a comparison of mass standards conducted between fourteen participating members of the Asia-Pacific Metrology Program. Two sets of weights with five nominal mass values: 1 kg, 500 g, 20 g, 2 g and 100 mg (OIML Class E₂) were used as travelling artifacts. These nominal values were chosen as they followed the nominal values of CCM.M-K1 and CCM.M-K2 except for the 10 kg. The program was sponsored by Physikalisch-Technische Bundesanstalt (PTB) and Vietnam Metrology Institute. VMI was the coordinating laboratory with National Measurement Institute, Australia (NMIA) being a technical assisting laboratory as well as a link laboratory to the CCM comparisons. The comparison was carried out from May 2005 to November 2006.

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 the CCM, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).