There are two main types of storage containers for liquid nitrogen tanks: low-temperature tank (mobile or fixed) and liquid nitrogen biological storage tank. Low temperature tank is a closed pressure vessel, with the tank body wrapped in a vacuum layer and a filling layer, providing insulation effect. The liquid nitrogen biological storage tank is an open insulation tank, also wrapped in a vacuum layer, but the tank mouth can be opened and there is no pressure inside the tank.

In terms of maintenance, hydrochloric acid containers need to be regularly inspected and maintained. The inspection content includes whether there is corrosion, leakage, and other phenomena in the tank body, and whether the auxiliary equipment is operating normally. The maintenance work includes cleaning the impurities inside the tank, replacing damaged parts, etc. In addition, attention should be paid to the anti-corrosion work of the storage tank, and anti-corrosion coatings should be applied regularly to extend the service life of the storage tank.