The rotary evaporator is a widely used evaporation instrument in the laboratory, also known as the rotary evaporator, which is widely used in industries such as chemical engineering, biomedicine, etc. However, many friends say that when encountering a situation where the vacuum cannot be reached, how to deal with it? Let's take a look at what to do if the vacuum of the rotary evaporator cannot be turned on:

　　Firstly, we need to check whether the system maintains vacuum without liquid. If not, we need to check the integrity of the pump. Disconnect the pump and use a vacuum gauge directly on the pump, using a closed line to observe how it works. If no air is added to the system, the vacuum pump should be able to quickly reach the corresponding pressure.

　　If there is no problem with the pump, then we need to check the system for leaks. This usually occurs at the joints, but it may also be a rupture of glassware or other components. Note that leaks may also occur at the sealing area near the connection between the condensing pipe and the steam pipe's upper end of the rotary evaporator body; The method of inspection is also very simple. You can place your ears near the glass joints and connections to listen for leaks. However, this method cannot hear small leaks when the vacuum pump is noisy, so you can only remove and reconnect all the joints.

　　The clumsy method is to replace and dismantle all the items at once, and test them by adding plugs or other methods to prevent the open upstream joints after each connection, so as to eliminate the problematic items step by step.

　　The above is the relevant content about the vacuum failure of the rotary evaporator, hoping to be helpful to everyone. If you want to learn more about this content, you can visit the official website of Haisiyuan at www.hsy515.cn!

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