The effect of dust properties, parameters and composition of gases for cleaning on the choice of synthetic filter materials for bag filters with pulsed regeneration is considered. Particular attention is devoted to cleaning high-temperature moist gases containing corrosive components. Recommendations are proposed for calculating the temperature of the acid dew point of gases being cleaned. Comparative characteristics are provided for synthetic materials produced overseas and used in gas filtration.One of the most efficient methods for cleaning industrial gas discharges from dust is filtration through cloth barriers. Of the numerous items of equipment operating on this principle, recently the most extensively used is bag filters with pulsed regeneration of the filtering cloth surface by compressed air. These filters are characterized by a high degree of capture due to the use of needle-punched filter materials, servicing simplicity as a result of the absence of moving parts (apart from the dust discharge system), compactness and correspondingly small area occupied.The operating reliability and efficiency of bag filters depends to a considerable extent on physicomechanical properties of the dust being captured (dispersed composition, abrasiveness, adhesiveness, hygroscopicity, electric properties of dust particles; tendency of dust particles towards coalescence, etc.), and also the main parameters of the gas stream being cleaned (temperature, moisture content, chemical composition).A careful study of production processes that are accompanied with emission of harmful substances; analysis of the qualitative and quantitative characteristics of the medium for cleaning in a bag filter; and the correct choice of synthetic filter materials for bag filters are all necessary conditions for achieving highly efficient and prolonged operation of this equipment.Recently in domestic practice of dust capture the most widely used filter materials are produced by well-known firms: Dupont (USA), Webron (Great Britain), BVF (Germany). Main Dust PropertiesDispersed composition. This is an original parameter in designing filtration equipment, that commences with a choice of specific gas flow (ratio of the volume of gas being cleaned in a unit time to the filtration surface area), expressed numerically as a rule by m 3 /(m 2 ·min), which corresponds to the gas filtration rate. The specific gas load should not exceed an optimum value, with which a sufficiently effective degree of cleaning and a not very high hydraulic resistance for the filter are provided.