GOST 5939-51

Coal tar pitch. Method for the determination of ash content

Occupational safety standards system. Mesh personal eye and face protectors. General specifications, test methods, marking

State system for ensuring the uniformity of measurements. Standard reference data. Toluene, liquid and gaseous. Density, enthalpy, entropy, isochoric and isobaric heat capacities and speed of sound at temperatures from 180 K up to 700 K and pressures up to 100 MPa

Plate snap-gauges with changeable lips for diameters over 100 to 360 mm. Dimensions

Tantalum and its oxides. Spectral method for determination of aluminum, vanadium, ferrum, calcium, silicon, magnesium, manganese, copper, nickel, niobium, tin, titanium, chromium and zirconium

Marble. Method for the determination of phosphorus