GOST 539-80

Nickel. Method for the determination of lead

Wire of chromel, alumel, copel and constantan for thermoelectrodes of thermoelectrical transducers. Specifications

Means of illumination of diving pressure chambers bulk holds and rigid diving devices. General specifications

Oscillator, modulator and control tubes; anode dissipated power more than 25 W. Test method of test for multiple switching-on

Acoustics. Measurement of room acoustic parameters. Part 2. Reverberation time in ordinary rooms

State system for ensuring the uniformity of measurements. Measurements of liquids and gases flow rate and quantity by means of orifice instruments. Part 4. Venturi tubes. Technical requirements