RE-100L rotary evaporator is mainly used in the concentration, crystallization, drying, separation and solvent recovery of pharmaceutical, chemical and biological pharmaceutical industries. Its principle is: under vacuum condition, constant temperature heating makes the rotary bottle rotate at constant speed, and the material forms large area film on the bottle wall, so it can be evaporated efficiently. The solvent evaporation is cooled by the high-efficiency glass condenser and recovered in the collecting bottle, so as to greatly improve the evaporation efficiency. The utility model is especially suitable for concentrating and purifying biological articles with high temperature and easy decomposition and degeneration. Applications of the RE-100L Rotary evaporator RE-100L rotary evaporator is mainly used in the concentration, crystallization, drying, separation and solvent recovery of pharmaceutical, chemical and biological pharmaceutical industries.