Conforms to A.S.T.M.E-11. Each Sieve has an Individualized etched serial number and is supplied with a certificate of analysis. Wash sieves (Deep frame US STD. Sieves) are generally used but not limited to wet testing of various materials without losing any of the sample. 2-1/2" Dia X 3" Deep tru 12" Dia. X 12" Deep. Permanent and removeable mesh wash sieves available. All wet washing sieves come standard with A.S.T.M #200 Mesh (except for the metric wash unit which comes installed with #180)