... pharmacy, metering, etc.Specifications:Standard Sieves and Test Sieves: Diameter: 5cm, 6cm, 8cm, 10cm, 20X5cm, 30X5cm.Grading Sieves, Sieves for Grain, Medicine, etc.: ... 15cm, 13cm, 17X5cm, 20X5cm.Square Opening Sieves, Round Opening Sieves and Wire Mesh Sieves for Coal:(Wooden frame opening: 0.2 ... 90X60X10cm. Custome orders are also welcome. Good quality Test Sieves(high quality and low price)