The Rotary-Evaporator-Distillation Unit 20L mainly used in biology, medicine, chemical, food and other fields of test, test and production. Has a large capacity, large caliber rotary evaporation bottle, placed in a water bath, rotate the heating, so that the solution of diffusion efficient evaporation. Product can be used with circulating water type multi-purpose vacuum pump, diaphragm vacuum pump,low temperature cycle (vacuum) pump, circulating cooler, constant temperature cycle, low temperature coolant circulation pump and other ancillary components of the system. rotary drills,rotary powered mini,rotary cupping,rotary rasp,rotary,aircraft rotary,rotary filling,dual rotary,swiss rotary,rotary grinding.syi