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After startup, put the materials into the material box for freezing The freezing process of materials On the one hand, the vacuum system vacuumizes and takes away part of the water; On the other hand, when the material is frozen, the water contained in some molecules is discharged to the surface of the material for freezing After the freezing requirements are met, the material is heated and dried by the heating system, and the water contained in the material is brought to the freezing capture tank for freezing by vacuuming to meet the requirements of material freeze-drying.
Freeze drying refers to the process of removing water or other solvents from frozen biological products by sublimation. Sublimation refers to the process in which a solvent, such as water, like dry ice, changes directly from a solid state to a gaseous state without going through a liquid state. The product obtained by freeze-drying is called lyophilizer, and this process is called lyophilization.
Traditional drying will cause material shrinkage and destroy cells. During freeze-drying, the structure of the sample will not be damaged because the solid components are supported by solid ice in its position. When ice sublimates, it leaves pores in the dry residual material. In this way, the integrity of the biological and chemical structure and activity of the product are retained.