Cryogenic liquid nitrogen storage tank
The liquid nitrogen storage tank is only used to hold liquid nitrogen, and other liquids are not allowed; check whether the inside of the container is clean and dry before use; pre-cool with a small amount of liquid nitrogen before filling it with liquid nitrogen; for long-term storage, you need to replenish liquid nitrogen regularly , the replenishment timing should generally be appropriate when the remaining amount of liquid nitrogen is one-third of the total capacity; it is strictly forbidden to place objects on the lid of the liquid nitrogen storage tank and seal the neck; when putting in or taking out frozen items, try to open the tank mouth The time is short to reduce the consumption of liquid nitrogen, and do not lift all the cylinders out; the liquid nitrogen storage tank should be strictly protected from impact and collision; it is strictly forbidden to use hard objects to remove the frost in the neck tube, so as not to damage the neck tube
