For large-scale scientific research experiment sites and sample preservation centers, the conventional model, 1-175 liters of liquid nitrogen storage tank, only has a sample storage capacity of more than a thousand, which is too small! What they need are liquid nitrogen tanks that can store a large number of biological samples in a centralized manner, tens of thousands to hundreds of thousands, and only cell bank storage tanks, also called stainless steel cryogenic freezers, can meet the demand!
What is the difference in the structural characteristics of this huge capacity container that can store biological samples in a centralized manner?
What is more prominent is its internal structure – samples and liquid nitrogen are stored in partitions!
Conventional liquid nitrogen storage tanks, as we know, samples will be soaked in liquid nitrogen to ensure a constant temperature; cell bank storage tanks are different, although samples and liquid nitrogen are also in the same liner, but the liner is “divided” into upper and lower parts by a large tray Two parts, the upper part holds the sample, and the lower part holds liquid nitrogen. The liquid nitrogen will provide low-temperature nitrogen to the sample, but the liquid will not directly contact the sample.
Such a structural design avoids tube explosion to a large extent and prevents cross-contamination, which ensures the safety of samples.
Moreover, the cell bank storage tank has a hot gas bypass design to prevent external heat from entering the tank. The sample is not soaked in liquid nitrogen to ensure a uniform and stable storage temperature. There is also cover opening protection within a certain period of time, which is more secure .
In addition, it is the intelligent management system of the cell bank storage tank, which is designed for the storage of large quantities of samples, can measure temperature in real time, has automatic alarm, remote alarm function, and can control automatic replenishment, etc. These are not found in other liquid nitrogen tanks!
