GOST 20739-75

Electrical apparatus for use in the presence of combustible dust. Part 2. Test methods. Section 1. Methods for determining the minimum ignition temperatures of dust

Clamp bolts for rail track fastenings. Specifications

Natural wool. Method of determination of the fineness

State system for ensuring the uniformity of measurements. Certified reference materials of natural gas magistral and substitute natural gas. Procedure of determining the metrological characteristics

State system for ensuring the uniformity of measurements. Balance for static weighting. Methods and means for verification

Copper. Measurement of impurities mass fraction in copper by an inductively coupled plasma mass spectrometry method