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Determination of the porosity of a filtering cloth
The porosity of any filtering cloth can be determined by microscopic measurements together with the following equation: m2 Porosity (b) = --------- (d+m2) where, ‘m’ is the mesh width and ‘d’ diameter of the strand in the mesh work. If porosity of a filtering cloth is determined, then it is possible to calculate the opening area ratio ‘R’ by the equation. ab R= ---- A where, ‘a’ is the total area of filtering portion in sifting area and ‘A’ the mouth area of the net. |