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1.1 ,This test method covers the determination of the pore size distribution of geotextile filters with pore sizes ranging from 1 to 1000 μ,m.
Note 1: ,The accuracy of this procedure has been verified up to a maximum pore size of 500 μ,m. Above this value, accuracy has been found to be equipment dependent and should be verified by the user through checks on materials with known opening sizes.