The liquid nitrogen tank used for cell storage is mostly used in the laboratory, and it is used with freezing racks and freezing boxes to preserve samples.
This type of cell storage liquid nitrogen tank has “low liquid nitrogen consumption” and “large-capacity cryopreservation” in common, so how long can it freeze cells?
It also depends on the capacity and caliber of the liquid nitrogen tank. The larger the caliber, the faster the liquid nitrogen consumption;
For example, in the same cell storage liquid nitrogen tank with a capacity of 30 liters, the daily evaporation of liquid nitrogen with a 125mm diameter is 0.36 liters/day, and the static storage time of liquid nitrogen is 85 days; the daily evaporation of liquid nitrogen with a 210mm diameter is 0.72 liters/day, and the Nitrogen storage time is 45 days.
The same capacity and different calibers, 210mm caliber liquid nitrogen evaporation is twice that of 125mm.
In practical applications, it is difficult to keep the cell storage liquid nitrogen tank static. You need to open the lid to take the sample and store the sample inside. Every time the lid is opened, the loss of liquid nitrogen will increase.
The static time will only be higher than the 85, 45 days lower than the static state, and it may be 65, 30, etc. The higher the frequency of opening the lid, the shorter the storage time.
In addition to the capacity, compared with the same caliber of different capacities, the storage time of the larger capacity will be longer, because it has a large amount of liquid nitrogen;
For example, compared with 65 liters of 100 liters of cell storage liquid nitrogen tank, the same 125mm diameter, 65 liters of static liquid nitrogen can be used for 90 days, and 100 liters of liquid nitrogen is 168 days.
Therefore, how long the cell storage liquid nitrogen tank can store cells depends on the specific capacity and caliber.
Of course, the most important thing is to choose a liquid nitrogen tank with a suitable capacity and a long freezing time according to the number of samples!
