The freeze-drying process begins with freezing the item. Next, the product is placed under vacuum pressure to evaporate the ice in a process known as sublimation. This allows the ice to directly transform from a solid to a gas, bypassing the liquid phase. Heat is then applied to aid in the sublimation process. Finally, low temperature condenser plates remove the vaporized solvent to complete the freeze-drying process. For most items, the finished product that can be brought back to its original state by just adding water, while other items are transformed into a more effective end product in the dry form.
Let’s Win Together
For over 50 years OFD has set the standard of excellence in Lyophilization. We’re ready to apply our experience and unique manufacturing capabilities to find a successful, scalable solution to address your unique preservation challenge.