Sieve shakers are used for fast, but precise separations of fine and coarse dry particles. The sieving action can be varied for different material densities and textures. Mixing methods vary from mechanical shakers that mimic hand-shaking sieves to sonic separation technology styles. Precise digital timers and uniform action ensure dependable and comparable results. Typical materials used for separation within sieve shakers include chemicals, pharmaceuticals, cosmetics, foods, powdered metals, and detergents.