Household Small Vacuum Freeze Dryer Lyophilizer 2300W For Fruit Meat Pet Food 220v

Household Small Freeze Dryer Lyophilizer For Vegetable Fruit Meat Pet Food

Freeze-drying Principle
 

Freeze-drying is a physical drying method in which the water in the material is directly converted into ice at extremely low temperature, thus drying. The main process of freeze-drying is to directly convert the high-temperature water molecules into low-temperature ice molecules, that is, directly convert the water molecules into gaseous state, thus avoiding the transformation process of water from liquid to gas in the traditional drying method, thus greatly reducing the content of water in the material.

How to use freeze dryer

1. Prepare Sample: Depending on the type of sample, suitable preparations may need to be made e.g. grinding, sorting, and cleaning by sieving, shaking or chemical treatments. 2. Pre-freezing: This step involves placing the prepared sample into pre-chilling containers. Cryogenic containers reach temperatures of -196°C to freeze the sample and prepare it for freeze drying. 3. Load the Sample Tray: Place cooled sample onto the freeze drying shelf before placing into the freeze dryer. 4. Primary Drying: During this phase, under vacuum, the ice/water vapor sublimates from the frozen sample into the condenser area. 5. Secondary Drying: The last phase of the freeze drying process during which the residual moisture is removed from the sample. Humidity sensing helps to monitor the state of the product. 6. Storing: The freeze-dried sample is ready for storage and removal. The shelf-life can be extended using a variety of packaging materials. An oxygen-impermeable clamshell is a good choice for extending the shelf-life of products.

Freeze Dryer Parameter