Rotary evaporator is also popular named as rotavap or rotovap, which uses precise engineering to effectively remove solvents / recycle alcohol from a sample using evaporation. Compared with other evaporators, such as rising film evaporator, wiped film evaporator, rotary evaporator is the most economical and affordable. There are small laboratory types and large ones, so the range of options is wide, and the price can be more economical. If you want to control your budget, the rotary evaporator is your best choice for concentration, solvent removal and alcohol recovery.
Rotary evaporator is mainly used for two purposes, the first is to concentrate the non-volatile components in the mixture, the second is to extract the volatile aroma and flavor, and to gently extract molecules from the mixture at low temperature. In fact, all distillation has a basic purpose - separation. Sugar, acid, coloring and most bitter compounds are separated from aroma, alcohol, water and small-molecule flavors. And the rotary evaporator has another big advantage, it can separate food compounds from each other without changing them. Therefore, in addition to laboratory research, university teaching, and cbd industry, the rotary evaporator is also widely used in the food and beverage industries.
The two major advantages of the rotary evaporator, the first is to remove the solvent and do alcohol recovery under vacuum, which reduces the boiling point of the material and eliminates the need for high-temperature distillation. The second is that the evaporation flask increases the surface area of the material during the rotation process, which greatly accelerates the evaporation speed, and the material is uniformly mixed and heated by forced convection to promote stable and uniform evaporation.
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