State system for ensuring the uniformity of measurements. Procedures of measurement of mass fraction of the parent substance of reagents and superpure substances by titrimetric methods. General requirements
Civil defense. Engineering and technical equipment of civil defense constructions. Exploitation of air purification and regeneration devices of the systems of ventilation. General requirements
Grain. Methods for determination of general and fractional content of extraneous matter and damaged grains; content of small grains and grain size; content of grains attacked by pests; content of metallic particles
