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Common configuration of rotary evaporators

The rotary evaporator is one of the commonly used instruments in the laboratory. It is a simple and mature product. It is mainly composed of motors, distillation flasks, heating pots, condensers and other components. Mainly used for distillation, concentration, drying, recovery, etc. in the process of synthesis, analysis, etc. It is electronically controlled to rotate the evaporation flask at a constant speed at a suitable speed to increase the evaporation area. The evaporation flask was brought to a negative pressure by a vacuum pump. The evaporation flask was placed in a heating pot while rotating, and the solution in the bottle under negative pressure and heating was diffused and evaporated in rotation. It is used very frequently in chemical laboratories. Rotary evaporator has the advantages of simple maintenance, stable performance, safe and reliable use, high sensitivity and so on. Applications cover chemical companies, pharmaceutical companies, universities and research institutes. In this article, I will introduce you to the common configuration of rotary evaporator.

rotary evaporators

rotary evaporators

the common configuration of the rotary evaporator

  1. Heating water bath: The general heating medium is clean water. If there is a special need for temperature, it can be replaced with silicone oil or high temperature silicone oil. Although the manufacturer will have a cover on the water bath, the frequency of use is not high. At rest time, it can prevent dust from entering the water bath or oil bath and keep the water bath or oil bath clean.

    Heating water bath

    Heating water bath

  2. Condenser: The general cooling medium is water. If the ambient temperature is high, the condensation effect is not good, you can replace it with an ethanol bath, and the device is equipped with a circulating freezer. The cooled ethanol is pressed into a condenser and subjected to a temperature lowering treatment. If you are experiencing extreme cold weather, do not use the rotary evaporator when standing still, drain the water in the condenser overnight. Prevent the water from forming a solid, and the volume expands and expands the condenser.

    Condenser

    Condenser

  3. Pressure reducing equipment: often configured as a water pump. Some high boiling solvents can be used to replace the pump with an oil pump. You should pay attention to the equipment requirements when changing.

    Pressure reducing equipment

    Pressure reducing equipment

 

Due to the delicate and rigorous structure of the rotary evaporator, if the operation is improper, the rotary evaporator may be damaged or cause structural changes to reduce the accuracy and shorten the service life of the rotary evaporator. Therefore, the surveyor must be in the spirit of being extremely responsible for the state and collective property, and be careful to use and properly use the rotary evaporator.

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