Ключевые слова:
Petroleum products, Gasoline, Automotive fuels, Aviation fuels, Liquid fuels, Petroleum, Gums, Chemical analysis and testing, Determination of content, Evaporation residue determination, Insoluble matter determination, Extraction methods of analysis, Solvent extraction methods, Gravimetric analysis, Test specimens, Test equipment, Testing conditions, Thermometers, Specification (approval), Precision, Reproducibility