This standard covers three methods by liquid sedimentation for quantitative determination of particle size distribution in sub-sieve range. The first two methods are used for the particle size down to about 3υ while the third method is applicable to the determination of particle size distribution in the range 3 to 0·01 micron.
IS 5282-1969 history
1970IS 5282-1969 Liquid sedimentation method for determining powder particle size