This monograph consists of two parts. The first part provides detailed, reliable and complete information about the national primary and special reference databases of Uzbekistan, Turkmenistan and the Russian Federation, as well as about all the standards contained in the databases.The second part provides information on both reference fluid viscosities. The technical and metrological features and metrological parameters of normative documents, and normative documents are described in detail.This monograph is recommended for demanding researchers who need information about national reference databases.