GOST 17731-79

Ventilation for buildings. Air terminal devices. Aerodynamic testing and rating for mixed flow application

Chemical fibres. Terms and definitions of defects

Occupational safety standards system. Electric hand-held tools. Specific safety requirements and methods of testing hammers and drills

Systems of pneumatic flying vehicles. Nominal, work and test pressures

Drinking water. Methods for determination of fluorides mass concentration

State system for ensuring the uniformity of measurements. Optical power meters, optical radiation sources, return loss meters and optical testers for fiber-optical transfer systems. Verification method