Ideal for fast, effective comminution of soft to medium-hard, brittle, fibrous materials, as well as difficult-to-mill and temperature-sensitive samples. Cryogenic grinding, dispersion and homogenisation are also areas of operation. The variable speed rotor mill is an ultra-centrifugal mill with variable speed settings between 6000 and 20000 min^-1 and automatic speed regulation for constant milling in the areas of analytic, biology, chemistry, agriculture and forestry, foodstuffs, plastics and textiles, pharmaceuticals, environment / RoHS. For optimal material feeding the vibratory feeder LABORETTE 24 (optional) is recommended.