The Ball Mill can be used for grinding crystalline material, for mixing dry materials and under certain conditions wet materials. Ball Mill consists of three main parts. Drive unit with stand, Ball Mill jar with cover and stainless steel balls. The jar cover is held in place by a knurled screw and support, which forces it against a rubber gasket for airtight seal. The Ball Mill jar top cover and balls are made of stainless steel material. Ball diameter varies between 19 mm to 25 mm. The ball mill jar rests on two rollers. The speed rotation is controlled by potentiometer. The Ball Mill jar & balls may be sterilized in a water bath. The Ball Mill is suitable for screwing on main drives units.