Liquid nitrogen tanks can generally be divided into two types: liquid nitrogen storage tanks and liquid nitrogen transportation tanks. Storage tanks are mainly used for static storage of indoor liquid nitrogen, and liquid nitrogen tanks are not suitable for long-distance transportation in working conditions; In order to meet the transportation conditions, the liquid nitrogen transport tank has been specially designed for shock resistance. In addition to static storage, it can also be used for transportation when filled with liquid nitrogen, but violent collisions and vibrations should also be avoided.

1. During the use of the jar, the usage of the jar should be checked at any time every day. If there is liquid nitrogen in the jar, if water droplets or frost are found on the cap and upper part of the jar, it indicates that there is a quality problem with the jar and should be stopped immediately;

2. When there are no water droplets or frost on the bottle cap and upper part of the jar, touch the outer shell with your hand. If you feel that the upper part is cold and the lower part is hot, it indicates that there is some quality problem with the jar, that is, the daily increase and loss of liquid nitrogen is large. Pay attention to observation to prevent damage to the stored substances after the liquid nitrogen is consumed. If necessary, it is best to stop using it; If the temperature is consistent, it indicates that the quality of the jar is not a problem.

3. After opening the bottle cap, the mist inside the bottle does not overflow but sinks, indicating that the jar is in good condition.

4. Listen to the sound of bubbles inside the jar from the bottle mouth with your ears. If it is frequent, there is a problem with the quality of the jar, otherwise there is no problem.

The purpose/application of liquid nitrogen tank:

1. Active preservation of animal semen.
Mainly used for semen preservation and long-distance transportation and storage of excellent breeds of livestock such as cattle and sheep, as well as rare animals.

2. Activity preservation of biological samples.
Vaccines, bacterial strains, cells, as well as organs of humans and animals in the biomedical field can be soaked in liquid nitrogen stored in liquid nitrogen tanks for long-term active preservation. When needed, remove and thaw before use.

3. Deep cold treatment of metal materials.
By using the liquid nitrogen stored in the liquid nitrogen tank for cryogenic treatment of metal materials, the metallographic structure of the metal material can be changed, significantly improving its hardness, strength, and wear resistance.

4. Deep cold assembly of precision parts.
Assembling precision parts through liquid nitrogen cryogenic treatment improves the quality of component assembly, thereby enhancing the overall performance of equipment or instruments.

5. Refrigeration and freezing in the medical and health industry, as well as refrigeration for medical surgeries.