GOST 25915-88

Pitches. Sampling

Copper concentrates. Methods for determination of silicon dioxide

Reagents. Ammonium sodium hydrogen phosphate 4-aqueous. Specifications

Motor vehicles. Content of pollutants in the air of cabin and passenger compartment. Testing methods and specification

State system for ensuring the uniformity of measurements. Pressure gauges, vacuum pressure gauges, vacuum manometers, draught gauges, delivery head meters and draught head gauges with unified electric (current) output signals. Methods and means of verification

Household and similar electrical appliances. Safety. Part 1. General requirements