... ,300mm,315mm,450mm Aperture:25um-6.7mm Perforated plate test sieve8inch diameter 200mm,300mm,315mm,Aperture:4mm-125mm Washing ... The standard testing sieve is applied to exact mesh analysis, test, measure, classification for powdery material in lab, hospital, pharmacy, ... time use . Diameter 300/200/100/75mm Test Sieve Product name Standard Test Sieves Material Stainless steel 304, Nickel Plated ...