Р.V. Migal, E.P. Sobina, T.N. Tabachnikova Al’manac of Modern Metrology № 2 (14) 2018, pages 81–86 The paper presents the results of the development of transfer standard as a high-purity sub-stance, including from the standpoint of comparing approaches to assessing the purity or mass fraction of the main substance indirectly and directly. An analysis of the … Continue reading Development of comparison standard of zinc of high purity