Laboratory: Definition and principle of chromatographic methods

Rotary evaporator is a commonly used vaporizer product, which is mainly composed of motor, distillation bottle, heating pot, condenser tube, etc. The product has the advantages of stable performance, flexible use, high reliability and easy maintenance.

Rotary evaporator is a commonly used vaporizer product, which is mainly composed of motor, distillation bottle, heating pot, condenser tube, etc. The product has the advantages of stable performance, flexible use, high reliability and easy maintenance. What should I pay attention to when using the optional evaporator? The following small series will introduce the precautions for the use of the rotary evaporator. I hope it can help everyone.

Rotary evaporator use precautions

1. Before starting the steaming, adjust the angle of the egg-shaped bottle, the water bath, and the steamer port for the sample, and then load the sample into the egg-shaped bottle to prevent the loss of the sample during the installation of the rotary evaporator. And damage to the spinner port.

2. After the egg-shaped bottle containing the sample is smoothly connected with the steamer port, first turn the rotary button to check whether the rotation is flexible. More importantly, see if the steamed sample is completely or mostly immersed in the water bath. In order to ensure the steaming efficiency.

3. The sample contained in the eggplant bottle should not exceed 75% at most, otherwise there will be a reverse suction when decompressing.

4. Next, install the container containing the distillate. Pay attention to the use of some gentlemen's forest when connecting, to ensure good sealing, turn off the cooling water, close the venting valve, open the decompression device, and perform vacuum distillation.

5. During the decompression process, adjust the temperature of the water in the water bath to match the boiling point of the sample you are steaming. This can be seen from the reflux state of the return tube, when the reflux is dripping instead of It is best when it is water.

6. At the end of the rotary evaporator, the venting valve should be opened first to make the air pressure inside and outside the rotary evaporator consistent, then turn off the rotary switch and remove the eggplant bottle.

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