Cereals and pulses are used in the separation of impurities from the product heavier. The machine makes a distinction according to the specific weight of the material. The main product is a heavy stone, metal, glass, etc. materials such as steel mesh table top, leaving the product on the basis of absorbed air remains. Colliding into the groove of stone out of table movement and leaves the machine. One machine, one driven by an electric motor connected to the aspirator. Machinery, wheat, barley, lentils, cumin, sesame seeds and used all kinds of dried beans.