Precision Test Sieves with  Electroformed Nickel ASTM E-161 Mesh with Clear Acrylic frame. Works with L3P and VariSifter Sonic Separators for fine particle separation Outside Diameter = 3.5" Inside Diameter = 3" Height = 1 ¼ "

Clear Acrylic Test Sieves with Stainless Steel ASTM E-11 Wire Cloth Works with L3P and VariSifter Sonic Separators for fine particle separation Outside Diameter = 3.5" Inside Diameter = 3" Height = 5/8"