GOST R 8.920-2016 确保测量一致性的国家系统. 含一氧化氮, 二氧化氮, 硫化氢, 二氧化硫, 氨的气体混合物的有证标准物质. 计量学特性的测定程序
State system for ensuring the uniformity of measurements. Certified reference materials of gas mixtures with Nitrogen oxide, Nitrogen dioxide, Hydrogen sulfide, Sulfur dioxide, Ammonia. Procedure of determining the metrological characteristics