The rotary evaporator, whose English term is rotary evaporator, is a device that is used in chemical, pharmaceutical, food, oil and petrochemical laboratories to remove and effectively evaporate the solvent from the sample. The first rotary machine was invented by Lyman C. Craig and commercialized by the Buchi company in 1946 and widely used. Nowadays, they usually use the term rotavap instead of using the full name of the device. There are different types of rotaries based on their application. The rotary discharge from the bottom accelerates the evaporation of the liquid phase by blowing nitrogen gas into the sample. Rotating rotaries increase the rate of evaporation by creating centrifugal force, and a combination of rotary motion and a distillation system is used in the rotaries. The main parts of a rotary evaporator consist of the following components:
1- A motor that rotates the evaporation balloon or the small glass containing the sample.
2- A steam channel that acts as the rotation axis of the sample and is the interface that causes the vapors to leave the sample.
3- A vacuum system that reduces the pressure inside the sample chamber and makes the evaporation process faster.
4- A hot liquid bath, usually water, is used to heat the sample to be evaporated.
5- A condenser or refrigerant with a spiral through which the vapors are cooled and turned into liquid.
6- A condensate collecting flask at the bottom of the condenser to collect the double distilled solvent
7- Mechanical or motor mechanism to quickly remove the evaporation flask from inside the hot water bath.
Product Specifications
Model R502B
Company : Heidolph
Rotary volume: 5 liters
Received volume: 3 liters
Rotary speed: 0rpm-120rpm
Heater power: 2 kW
Weight: 38 kg
