Freeze drying technology and recent popular freeze dryer

What is freeze drying?

Freeze drying, also known as lyophilization, is a process of dehydrating a substance (typically food or pharmaceuticals) by freezing it and then removing the frozen water by sublimation, a process of transition from solid directly to gas without passing through the liquid phase.

The process involves freezing the substance at a very low temperature, typically below -50°C, and then placing it under a vacuum. This causes the frozen water in the substance to evaporate directly from the solid state to the gas state, bypassing the liquid phase. The result is a dry product that has a long shelf life and can be rehydrated easily by adding water.

What materials are suitable of freeze drying?

Freeze drying is often used to preserve food, such as fruits, vegetables, and meats, as well as pharmaceuticals and other biological materials, because it can remove water without damaging the structure of the substance or affecting its properties.

What freeze dryer are popular now?

Lab Freeze Dryers: These are compact and portable freeze dryers that are commonly used in research laboratories and small-scale production facilities. They are suitable for freeze-drying small volumes of samples and are often more affordable than larger units.

Industrial Freeze Dryers: These are large-scale freeze dryers that are used in commercial production settings. They are designed to handle large volumes of samples and are equipped with automated controls and monitoring systems to ensure consistent and efficient operation.