GOST 450-1977 Calcium chloride for industrial use. Specifications
GOST 5583-1978 Technical and medical oxygen gas. Specifications
GOST 8.315-1997 State system for enshuring the uniformity of measurements. Certified reference materials of composition and properties of substances and materials. Basic principles*, 1997-04-17 Update
GOST 8074-1982 Toolmaker's microscopes. Types, main parameters and dimensions. Technical requirements