For the choice of media should note the following points: A, effective area, that is, the use of filter paper area, the capacity of dust on the large, small resistance. The use of life on the long, of course, also increased the cost of response; fiber diameter, the finer, cut blocking effect, a corresponding increase in filtration efficiency; paper binder content of high tensile strength of paper, filtration efficiency, hair removal imagination , Filter background dust, less water resistance, but also a corresponding increase in resistance.
