GOST 31189-2015

Marine, locomotive and industrial diesel engines. Exhaust smoke opacity. Standard values and testing methods

Cobalt. Method for the determination of carbon

Product-quality index system. One-blade instruments. Nomenclature of indices

Ambient air. Measurement of the mass of particulate matter on a filter medium. Beta-ray absorption method

Joints of tubes with tube-plates and collectors of heat exchangers. Requirements for typical technology of making tube to tube-plate joints by means of leads electrical explosion energy

Cements. Methods of testing with using polyfraction standard sand