working principle,By electronic control, the flask is rotated at a constant speed to increase evaporationareaUse a vacuum pump to keep the evaporation flask under negative pressure. The evaporation flask is placed while rotatingwater bathHeating at a medium constant temperature, the solution inside the bottle is heated, diffused, and evaporated in a rotating flask under negative pressure. The rotary evaporator system can be sealed and depressurized to 400～600Millimeter mercury column; Heat the solvent in the distillation flask with a heating bath at a temperature close to the boiling point of the solvent; At the same time, it can also rotate at a speed of50～160turn/Separate the solvent to form a thin film and increase the evaporation area. In addition, under the action of the cooler, the hot vapor can be rapidly liquefied, accelerating the evaporation rate.

Instructions for using a rotary evaporator:

1、 Height adjustment:Manual lifting,Rotate the handwheel on the machine column,Turning from clockwise to upward,Reverse to decline.Electric lifting,Touch the up button with your hand to raise the host,Press the down button with your hand to lower the host. 　　

2、 There are two external connectors on the condenser for connecting cooling water,Connect one end to water,Connect the other end to the water,Usually connected to tap water,The lower the temperature of the condensate, the better the effect.Install a vacuum connector on the upper port,Used for vacuum pumping with leather tubing.

3、 Before starting up, turn the speed control knob left to the smallest position,Press the power switch and the indicator light will turn on,Then slowly turn right to the desired speed,Generally used for large evaporation bottles,low speed,Use lower rotation speed for solutions with high viscosity.The flask has a standard interface24number,Random attachment500ml,1000mlTwo types of flasks,The solution volume generally does not exceed50%For suitability.