The Operation and Maintenance of Liquid Nitrogen Tank.
1. When putting in and taking out frozen items, try to keep the opening time of the tank mouth as short as possible. In order to reduce the loss of liquid nitrogen, do not take out the bucket completely, so as not to affect the storage effect of the item.

2. Check the weight of the container frequently to know how many days the liquid nitrogen can be used in time. When the amount of liquid nitrogen is reduced to one-third of the total capacity, add liquid nitrogen to avoid the necrosis of the stored items.

3. It is found that there is sweating or hoarfrost around the neck of the container, which proves that the vacuum degree of the container has deteriorated and can no longer be used. It should be replaced immediately.

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