Sieving machines are available in various designs such as linear sieves, tumbler sieves, and vibrating sieves each employing a different sieving action. The choice of a suitable sieving machine depends on the desired particle size distribution, required amplitude and frequency of vibrations, and the physical state of the mixture. Sieving machines are used for removing dust from granular products and for grading grains. They are also used for the classification of granular material and the separation of solids from a slurry mix in the food processing industries.