RE-201D rotary evaporatorMainly used for continuous distillation of large amounts of volatile solvents under reduced pressure conditions. Especially for the concentration of extraction liquid and distillation of the receiving liquid during chromatographic separation, reaction products can be separated and purified. The basic principle of the RE-201D rotary evaporator is vacuum distillation, which means that under vacuum conditions, when the solvent is distilled, the distillation flask rotates continuously.
RE-201D rotary evaporatorStructure:
A distillation flask is a pear shaped or round bottom flask with a standard ground mouth interface, connected to a pressure reducing pump through a highly reflux serpentine condenser tube, and the other opening of the reflux condenser tube is connected to a receiving flask with a ground mouth for receiving the evaporated organic solvent. There is a three-way piston between the condenser tube and the pressure reducing pump. When the system is connected to the atmosphere, the distillation flask and the liquid receiving flask can be removed to transfer the solvent. When the system is connected to the pressure reducing pump, it should be in a reduced pressure state.
When using, the pressure should be reduced first, and then the electric motor should be turned on to rotate the distillation flask. At the end, the distillation flask should be stopped first and then vented to prevent it from falling off during rotation. As a heat source for distillation, it is often equipped with a corresponding constant temperature water bath.
RE-201D rotary evaporatorThere are the following advantages:
1. The RE-201D rotary evaporator is equipped with a lifting motor, which can automatically lift the flask above the heating pot when the power is off;
2. Due to the centripetal and frictional forces between the liquid sample and the evaporation bottle, a liquid thin film is formed on the inner surface of the evaporation bottle, which has a large heating area;
The force generated by the rotation of the sample effectively suppresses the boiling of the sample.
Based on the above features and its convenience, the modern RE-201D rotary evaporator can be used to quickly and gently distill the vast majority of samples, even inexperienced operators can complete it.
