Test Procedure:
take a representative oven dried sample of soil that weighs about 500 g. ( this is normally used for soil samples the greatest particle size of which is 4.75 mm)
If soil particles are lumped or conglomerated crush the lumped and not the particles using the pestle and mortar.
Determine the mass of sample accurately. Wt (g)
Prepare a stack of sieves. sieves having larger opening sizes (i.e lower numbers) are placed above the ones having smaller opening sizes (i.e higher numbers). The very last sieve is #200 and a pan is placed under it to collect the portion of soil passing #200 sieve. Here is a full set of sieves. (#s 4 and 200 should always be included)