As one of the commonly used instruments in the laboratory, it is important to learn the correct use method of the liquid nitrogen tank, which can not only greatly prolong the service life, but also ensure the use effect and quality. Now let's understand the following relevant instructions for the use of the liquid nitrogen tank:

　　1. The liquid nitrogen tank is mainly used to hold liquid nitrogen, and cannot be used to hold other liquids.

　　2. Before use, check whether the container is clean and dry.

　　3. Before filling liquid nitrogen, a small amount of liquid nitrogen must be used for precooling.

　　4. If the liquid nitrogen tank used for long-term storage needs to be replenished regularly, when the liquid nitrogen is replenished is generally when the residual amount of liquid nitrogen is 1/3 of the total capacity.

　　5. Do not place objects or seal the neck above the container cover.

　　6. Minimize the time to open the lid when accessing objects, in order to reduce the loss of liquid nitrogen.

　　The above is the relevant instructions for the use of liquid nitrogen tank. If there is any omission, please add it. If you want to know more about the contents, please visit the official website of Haisiyuan at www.hsy515.cn!

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