The vinyl chloride dust detection filter membrane belongs to the synthetic fiber category, which has the characteristics of electrostaticity, hydrophobicity, low resistance, acid and alkali resistance, and light weight. Except for a few, the content of trace elements in the blank value of this filter membrane is relatively low, which is suitable for the analysis of trace elements in atmospheric TSP. Wide applicability, low resistance, acid and alkali resistance, light weight, soluble, making sampling results more accurate and reasonable. Our company currently produces various specifications of vinyl chloride dust detection filter membranes, including diameters of Φ 25mm, Φ 37mm, Φ 40mm, Φ 75mm, and Φ 90mm.