How Can We Use Rotary Evaporator for Extraction?

Rotary Evaporator Kit

What is Rotary Evaporation?

Rotary evaporation means that the evaporation is completed by rotary process. Under the low temperature and negative pressure, the evaporation flask is rotated by a motor in a thermostat water bath, which makes liquid form a thin film across the interior of the flask so as to increase the evaporation area. It can rapidly extract excess solvent from less volatile samples.

How does Rotary Evaporation Relate to Liquid Extraction?

Rotary evaporation is a commonly and efficiently used method for liquid-liquid extraction. The liquid-liquid extraction, known as partitioning or solvent extraction as well, is considered as a way to separate compounds by utilizing their various solubilities. As we mentioned above, rotary evaporation can extract excess solvent from less volatile samples, so it is extremely suitable for liquid-liquid extraction.

Can Rotary Evaporator Remove Water?

The answer is “YES”. A rotary evaporator can remove solvent by evaporating samples through the continuous rotation of the evaporation flask. Meanwhile, the evaporation flask is heated uniformly by a water bath. Then the material with a lower boiling point can be evaporated quickly under negative pressure.

What is the Purpose of the Rotary Evaporator?

As a common and essential equipment used in laboratories and industries, a rotary evaporator has a great number of purposes. It is mainly used for the process of evaporation, concentration, crystallization, drying, separation, and solvent recovery, and especially used for the continuous distillation of large amounts of volatile solvents under reduced pressure. With so many application purposes, there is no doubt that a rotary evaporator can be applied in many areas. For example, it can be used in the small and pilot experiments and production in the biological, pharmaceutical, chemical fields and even food-making industries.

How We can Use Rotary Evaporator for Extraction?

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