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Shaanxi Roctec Technology Co,Ltd

Room 1407, West Building 1, Unit 1. Ziweishangceng, No.5 Taibai South Road, Yanta District, Xi'an, Shaanxi, China. 710065





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Operation Procedure Of Rotary Evaporator
- Jul 27, 2017 -

Operation procedure of Rotary evaporator


Vacuum pumping

Open the vacuum pump, vacuum not, should check whether the bottle mouth sealed, vacuum pump leaks, placed shaft sealing ring is intact, the external vacuum tube in a series of vacuum switch can improve the recovery rate and evaporation rate.


With the system vacuum negative pressure, the liquid material can be sucked into the rotating bottle with a hose at the feeding port, and the liquid material should not be more than half of the rotary bottle. The instrument can be continuous feeding, feeding should pay attention to 1. turn off the vacuum pump, 2/ stop heating, 3., after evaporation stop, slowly open the pipe cock, in order to prevent backflow.


The instrument is equipped with a specially designed water bath pot, must first add water after the electricity, temperature control scale 0-99 degrees, for reference. Due to the existence of thermal inertia, the actual water temperature is about 2 degrees higher than the set temperature. When used, the setting value can be corrected. For example, you need water temperature 1/3-1/2. Unplug the power plug after use.


Switch on the electric control box, adjust the twist to the optimum evaporating speed. Attention to avoid boiling water, bath vibration fluctuation, turn on cooling water.

Recovery solvent

First open the charging switch, deflate, then turn off the vacuum pump and remove the solvent from the collection bottle.