According to the purpose, liquid nitrogen tanks can generally be divided into liquid nitrogen storage tanks and liquid nitrogen transportation tanks. The liquid nitrogen tank should be stored in a well-ventilated and cool place, and should not be exposed to direct sunlight.
 
Due to its precise manufacturing and inherent characteristics, liquid nitrogen tanks are not allowed to be tilted, placed horizontally, inverted, stacked, collided with each other or collide with other objects, no matter when they are used or stored, they must be handled gently and kept upright at all times. When the liquid nitrogen tank is not in use, rinse it with clean water, drain the water, blow it dry with a blower, and place it at room temperature for later use.
 
After the liquid nitrogen in the liquid nitrogen tank is volatilized, the remaining material (such as frozen sperm) will quickly melt and become a liquid substance attached to the inner tank, which will corrode the aluminum alloy inner tank. If a cavity is formed, the liquid nitrogen tank will be scrapped, so it is necessary to scrub the tank after the liquid nitrogen in the liquid nitrogen tank is exhausted.
 
The specific scrubbing method is as follows:
First take out the lifting cylinder in the liquid nitrogen tank, remove the liquid nitrogen, and leave it for 2-3 days. After the temperature in the tank rises to about 0°C, pour warm water at about 30°C and scrub it with a cloth. If you find that some melted substances stick to the bottom of the inner tank, you must carefully wash it off. Then rinse it with clean water several times, and turn the liquid nitrogen tank upside down, place it in a place where it is safe enough not to tip over, let it dry naturally, or use a blower to dry it as described above. Note that during the entire scrubbing process, the action should be light and slow. The temperature of the water should not exceed 40℃, and the total weight should not exceed 2kg.