Liquid nitrogen tanks are cryogenic containers with a high-vacuum, multi-layer insulation design. They are mainly used to store liquid nitrogen and have the ability to preserve liquid nitrogen for a long time. They are widely used in fields such as biology, medicine, animal husbandry, scientific research, and industry.

To address the issue of liquid nitrogen evaporation during the use of biological liquid nitrogen container, the following methods can be adopted:

1. Optimize sealing performance: Regularly check and maintain the sealing performance of the liquid nitrogen tank to ensure that the lid and interfaces are undamaged and leak-free.

2. Reduce opening frequency: Minimize the number of times the liquid nitrogen tank is opened. Plan usage reasonably to reduce the time liquid nitrogen is exposed to the outside.

3. Use protective covers: Use quick-opening protective covers when opening the liquid nitrogen tank to reduce direct contact with outside air and lower the evaporation rate.

4. Use high-efficiency insulation materials: Wrap the exterior of the liquid nitrogen tank with high-efficiency insulation materials to reduce temperature exchange and lower the natural evaporation rate.

5. Regularly replenish liquid nitrogen: Develop a reasonable liquid nitrogen replenishment plan based on actual usage.

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