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Unused lubricating base oils and asphaltene free petroleum fractions. Determination of polycyclic aromatics by dimethyl sulphoxide extraction method and refractive index measuring
Document status: Active
Petroleum and natural gas industries. Materials for use in H2S-containing environments in oil and gas production. Part 1. General principles for selection of cracking-resistant materials
Document status: Active
Copper and complex ores, and products of their processing. Method for measurement of iron weight fraction
Document status: Active
Reagents and matters of special purity. Methods for preparation of buffer solutions
Document status: Active
State system for ensuring the uniformity of measurements. Certified reference materials of composition and properties of substances and materials. Basic principles
Document status: Replaced by GOST 8.315-2019