State system for ensuring the uniformity of measurements. State verification chain for measuring instruments of length and signal propagation time in optical fiber, average power, attenuation and wavelength of optic radiation for fiber-optical communication and data transmission systems
Anodic earthing of the electrochemical protective installations against corrosion of underground metal constructions. Methods for determining the biocorrosion aggressiveness of soils and their impact on underground metal constructions
State system for ensuring the uniformity of measurements. Certified reference materials of gas mixtures with Nitrogen oxide, Nitrogen dioxide, Hydrogen sulfide, Sulfur dioxide, Ammonia. Procedure of determining the metrological characteristics
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