Cryopreservation of cells is one of the main methods of cell preservation. Using cryopreservation technology to store cells in sub-196 ° C liquid nitrogen at low temperature, the cells can be temporarily removed from the growth state and their cell characteristics can be preserved, so that the cells can be resuscitated for experiment when needed.
Moreover, by properly storing a certain amount of cells, it is possible to prevent the cells from being contaminated due to contamination or other unexpected events of the cells being cultured, thereby playing a role in cell conservation.
Special attention should be paid: care should be taken during operation to avoid freezing of liquid nitrogen. Liquid nitrogen is regularly inspected and replenished at any time. It must not be evaporated. Tianchi liquid nitrogen tank can be used for 280 days.