Freeze Dry Technology

Freeze drying is the drying of frozen products in a vacuum below the triple point. The vacuum allows for a sublimation process facilitating the direct conversion of ice into vapor without any intermediate liquid stage.This results in an extremely gentle drying process preserving the product's active ingredient.Widely applied in the parmaceutical industry and food industry.

The freeze-drying principle is basically carried out below 0 ℃, that is, in the frozen state of the product. The analytical drying is generally not more than 60 ℃. Under vacuum conditions, when the water vapor is sublimated directly, the drug remains in the frozen ice shelf, forming a spongy porous structure, so its volume is almost unchanged after drying. Before reuse, as long as water for injection is added, it will dissolve immediately again.