Comparison of Duplicate Standards with the National Primary Standard for the Unit of Mass in 2014-2015

摘要

Results of comparisons of the national prototype kilogram No. 12 in 2013-2014 with the international kilogram prototype are discussed. Comparisons of secondary duplicate standards with the National Primary Standard for the unit of mass GET 3-2008 in 2015 by the method of combined measurements are reported. Work on improving the national primary standard for the unit of mass in light of the transition to a new definition of the kilogram is analyzed.