GOST 20899-75

State system for ensuring the uniformity of measurements. Dispersed characteristics of nanometric aerosols and suspensions. Measurement methods. Basic principle

Electrically propelled road vehicles. Safety specifications. Part 3. Electrical safety. Electrical circuits of electrical distribution systems and electrically conductive auxiliary electrical systems

General-purpose axial fans. General specifications

Hydraulic and pneumatic drives and lubricating systems. Nominal frequencies of rotation

Public catering services. Methods of laboratory quality control of products catering. Part 2. Methods of physical and chemical tests

Medical devices. Software. Part 2. Validation of software for medical device quality systems