1. All rotary evaporators are equipped with a built-in lifting motor, which can automatically lift the flask above the heating pot in case of power failure.

2. Due to the centripetal and frictional forces between the liquid sample and the evaporation bottle, a liquid thin film is formed on the inner surface of the evaporation bottle, which has a large heating area;

The force generated by the rotation of the sample effectively suppresses the boiling of the sample. Based on the above characteristics and its convenience, modern rotary evaporators can be used to quickly and gently distill the vast majority of samples, even inexperienced operators can complete it.

Disadvantages of rotary evaporator:

Boiling of certain samples, such as ethanol and water, will result in loss of samples collected by the experimenter. During operation, boiling can usually be prevented by carefully adjusting the working intensity of the vacuum pump or the temperature of the heating pot during the mixing stage of the distillation process. Alternatively, anti boiling particles can be added to the sample. For the samples that are particularly difficult to distill, including the samples that are easy to produce foam, special condenser tubes can also be configured for the rotary evaporator.