Freeze Dryer ?

Freeze Drying is the process of removing the moisture from a frozen biological product under vacuum to preserve the integrity of the product's biological and chemical structure and activities.

Conventional drying cause the material to shrink, damaging the cells.

This dose not occur in freeze drying because the solid components are held in place by rigid ice. The freeze dried product is said to be Iyophilized and the freeze drying process is also referred to as Iyophilization.

The freeze drying process was not carried out by man until late in the last century.

Freeze Dryer Process

Dehydration is an important process for the preservation and storage of biological,Of the various methods of dehydration, freeze drying is especially suited for substances that are heat sensitive.

The nondestructive nature of this process has been demonstrated by the retention of viability in freeze dried viruses and micro-organisms.

Freeze drying is a process whereby water is removed from frozen material by converting the frozen water directly into its vapor without the intermediate formation of liquid water.