There are many industrial applications in which substances need to be dried gently, to preserve their active ingredients. Typically, dry at minus temperature and in a pressure-tight environment is the most feasible solution.
Before freeze dry, raw products need to be frozen to -10C ~ -60C. And depending on application fields, to minimum the cross-contamination risk, the processing equipment have to be high control performance, capable of in-place freezing, drying and pressure control.
Vikumer engineers series of advanced freeze dryers and lyophilizers suitable for lab trials and commercial production. These robust systems can precisely control vacuum degree and chamber temperatures, so that create ideal freeze drying condition. Products can be dried quickly and gently.
Here is the water remove process in a freeze dryer diagram:
Here is the principle of sublimation: Diagram of water 3 phases.