Why rotary evaporator distillation is more widely used

Why rotary evaporator distillation is more widely used

Rotary evaporator becomes more and more popular since it was invented. Because it dose have several advantages better than other distillation equipment, the contrast is as follows:

rotary evaporator
rotary evaporator
  1. Speed -the rotary evaporator distillation is faster.

The rotary evaporator is electronically controlled to rotate the flask at a constant speed, in order to increase the evaporation area at a constant speed. The evaporation flask was brought to a negative pressure by a vacuum pump. When the rotary evaporator is distilled under reduced pressure, the distillation speed is quite fast because of the large surface area of the solution.The reduced pressure distillation is much slower, and zeolite is added.

  1. Rotary evaporator is more widely used.

Rotary evaporators are generally used for the extraction and concentration of solid drugs, which can prevent the spray of chemicals, and the extraction of liquid mixture. What’s more, people also use rotary evaporator to concentrate liquid through removing water from it.

In the mean time, reduced pressure evaporator and traditional evaporator can only be used for drying of easily decomposable liquid medicines.

rotary evaporator
rotary evaporator

Rotary evaporator distillation alcohol

The concentration of distilled alcohol in the rotary evaporator should be lower than 95.57%, only 95.57% can be achieved under the conditions of rectification, and the concentration of the rotary steaming is getting lower and lower with time.


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