GOST R IEC 851-6-94

Spiroid gears. Terms, definitions and symbols

Moulding sands. Methods for determination of medium size of seed and coefficient of homogeneity

Ammonia solution for industrial use. Determination of residue after evaporation at 105 C degree. Gravimetric method

Technical liquid ammonia. Determination of oil mass concentration by spectrophotometry method

Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz. Part 2-2. Immunity requirements for mains communications equipment and systems operating in the range of frequencies 95 kHz to 148,5 kHz and intended for use in industrial environments

Microphones. Methods of measurement of electroacoustic characteristics