Rotary evaporators are used in the laboratory for research and development as well as for quality control. The evaporators cover a wide range of special requirements and achieve a high degree of practicality. They are used to remove solvents from mixtures thus enriching the concentration of the desired substance. The combination of steam, heat and vacuum allows precise purifications to be reproduced. A complete set-up with rotary evaporator, vacuum pump, control unit, recirculating cooler and various accessories are gladly offered as ready-to-use application packages. Optional operating elements such as motorized hand lift facilitate the work.