https://www.globalgilson.com/3-inch-acrylic-frame-test-sieves 3in (76mm) diameter Acrylic Frame Test Sieves are available fitted with either ASTM E11 woven-wire cloth or ASTM E161 Precision Electroformed Mesh. The clear frames offer enhanced visibility to monitor separation performance of specimens during testing. They’re required for the GA-6 Gilsonic Autosiever and other sonic sifters. ASTM E11 Acrylic Frame Test Sieves are precision-machined to reduce sample loss. These sieves are supplied with ASTM E11 stainless steel woven-wire cloth in opening sizes from 5.60mm to 20µm (No. 3 ½ to No. 635). As well as their use with sonic sifters, they are also a recommended alternative to metal-frame sieves for the Gilson Performer lll Sieve Shaker. ASTM E161 Precision Electroformed Mesh Sieves offer greater accuracy for precision-particle sizing of small fine powder specimens. Electroformed Nickel Mesh openings are available from 150µm to 5µm, with tolerances to ±2µm. Precision Electroformed Sieves have a greater frame height, limiting the number that can be used in a stack. For more information go to https://www.globalgilson.com/3-inch-acrylic-frame-test-sieves