Laboratory Equipment & Services Information System by Centralized Laboratory Management Office (CeLMO)

A freezer dryer, also known as a lyophilizer, is a device used to remove moisture from materials via the process of sublimation. Sublimation is the transition of a substance directly from the solid phase to the gas phase without passing through the intermediate liquid phase. This process is particularly useful for preserving perishable materials such as food, pharmaceuticals, biological samples, and other sensitive materials.

The basic components of a freezer dryer typically include: Vacuum Chamber: This is where the material to be freeze-dried is placed. It is sealed off from the external environment to create a vacuum. Cooling System: The freezer dryer has a refrigeration system that cools the material to below its freezing point, typically between -40°C to -80°C (-40°F to -112°F), depending on the material being dried. Vacuum Pump: This creates a vacuum within the chamber, which lowers the pressure and facilitates sublimation of the frozen water or solvent from the material. Heating System: After freezing, the material is gradually heated, which causes the frozen water or solvent to sublimate, transforming directly from solid to vapor. Condenser: The vaporized moisture is then collected on a condenser surface, usually located within the vacuum chamber, where it solidifies again. Control System: A control panel allows the operator to set and monitor parameters such as temperature, pressure, and drying time.

Freeze drying is preferred for preserving delicate materials because it minimizes damage to their structure and maintains their original characteristics, such as taste, texture, and nutritional value. This makes freeze-dried products popular in industries such as food preservation, pharmaceuticals, and biotechnology. ILShin is a well-known brand in the realm of laboratory equipment, including freeze dryers. ILShin freeze dryers are designed for various applications, ranging from research and development to industrial production. They offer different sizes and configurations to accommodate different volumes and types of materials. ILShin freeze dryers are recognized for their reliability, efficiency, and advanced features that meet the demanding requirements of scientific and industrial processes.