When liquid nitrogen tank sit idle,To rinse off with clear water,the water will be drained by the blower to dry, placed at room temperature.
       After the liquid nitrogen volatilization of liquid nitrogen tank,Residual material (frozen sperm) will soon melt, changed into an liquid state substance,attached to the tank liner.
       It can cause corrosion of aluminum alloy of the tank,if the formation of hole,the liquid nitrogen tank must be scrapped,so the liquid nitrogen tank is depleted of liquid nitrogen jar scrub is very necessary.
       Wash containers with plain water or mild detergent solution and then wipe dry.
       The specific measures are as follows:
       First of all, the liquid nitrogen tank tube removed, liquid nitrogen is removed, placed 2 to 3 days, until the temperature rises to 0 degrees Celsius,  then pour warm water of 30 degrees Celsius, scrub with a cloth.
       Note that In the whole process of washing, action be slow, pour the water temperature should not exceed 40 degrees, the total weight of not more than 2kg.