This still depends on your specific usage scenarios and specific needs. If this jar is used for storage and is not opened often, it is recommended to have a diameter of 50mm, which can reduce the evaporation of liquid nitrogen and reduce the number of times to add liquid nitrogen. ; If the thing you want to freeze is large, the size of the caliber should be determined based on the size of the item to be frozen.
A wide-mouth liquid nitrogen tank is actually a large-diameter liquid nitrogen tank, and now it usually refers to a gas-phase liquid nitrogen tank.
In fact, although the wide-mouth liquid nitrogen tank has a large capacity and is difficult to move, it is actually widely used, such as bacterial strain preservation in agriculture, livestock sperm cryopreservation and low temperature in animal husbandry. Storage, etc. are all available, and its capacity is large enough to accommodate a variety of animal cells at one time, and it is also convenient to manage by category. In addition, wide-mouth liquid nitrogen tanks are also commonly used tools in the medical field. They can store umbilical cord blood, stem cells, vaccines, etc., or preserve medical devices in a low-temperature environment. It is also used in industrial cold assembly and mechanical cold treatment, because its large diameter makes it easy to access machinery and equipment. It can also be seen in the study of the physical properties of metals, space technology and electronics industry.