Due to the vacuum characteristics of the liquid nitrogen tank and the characteristics of thermal insulation, it can freeze samples, vaccines, semen, etc., but to make the liquid nitrogen tank work properly, it must be put in liquid nitrogen to work properly.
For example: liquid nitrogen tank freezing experiment sample
Put the sample in the experimental box, and then put the box in the basket or bucket, and then put it together in a liquid nitrogen container with liquid nitrogen (the basket / canister is suspended on the groove, do not throw it directly into the container in).
Finally, cover the neck plug of the liquid nitrogen tank. If there is a lock cover, cover the lock cover again, and the liquid nitrogen tank can work normally.