The RETSCH AS 400 control is used for the sieving of dry goods with test sieves of a diameter up to 400 mm. In this, the uniform, horizontal circular motion ensures exact separation of the product to be sieved. Fine and coarse-grained goods as found in the areas of milling, brewing, chemical industry, quarrying, soils, woodworking and plastics industry, can be exactly separated with the AS 400 control. The horizontal circular motion of the product to be sieved is particularly suitable for the separation of certain products, as milled grain, splints, and similar materials. For the testing of plastics (grainy moulding materials), the DIN 53477 even requires the circular sieving motion.