Tractors and Agricultural MachineryTractors and Agricultural Machinery0321-44432782-425XEco-Vector6575110.17816/0321-4443-65751Research ArticleComparative analysis of identification methods of working liquids and oils purity gradeBaryshevV. Iggps@susu.ac.ruGoglachevaK. N-KovaliovI. N-South Ural State UniversityUral Engineering Center, LLC15072013807283326042021Copyright © 2013, Baryshev V.I., Goglacheva K.N., Kovaliov I.N.2013Advantage of liquids purity identification by minor fractions of dirt particles, by their ratio and classifications taking into account the effect of basic cleaning means (but not stages of technical equipment life) on dirt is substantiated.technical equipmenthydraulic drivereliabilityindustrial purityclassificationgradesidentification methodsтехникагидроприводнадежностьпромышленная чистотаклассификацияклассыметоды определения[Барышев В.И. Причинность необходимости заново пересмотреть или отменить ГОСТ 17216 «Чистота промышленная. Классы чистоты жидкостей» // Гидравлика и пневматика. – 2006, №23-24.]