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Freeze dryers are designed to dehydrate products by freezing and lowering the pressure to remove ice through sublimation. Unlike conventional dehydration methods that use heat to evaporate water, freeze dryers operate at low temperatures, preserving the qualities of the rehydrated product. The process involves freezing the material, reducing the pressure, and adding heat to facilitate the direct change of frozen water into vapor (sublimation). The freeze-drying process consists of four stages: pretreatment, freezing, primary drying, and secondary drying.
One of the key advantages of freeze drying is the ability to maintain the original characteristics of the product. In pharmaceutical applications where liquids are often dried, the properties of the final product are optimized by incorporating excipients. Freeze drying is considered the preferred method for dehydrating food and other products due to its ability to preserve quality. Products dried using freeze dryers exhibit higher levels of characteristics such as aroma, rehydration, and bioactivity compared to those dried using alternative methods. Freeze dryers serve extensive use in various fields, including biology (bacteria and yeasts), biomedicine (surgical transplants), food processing (coffee), and preservation.
Below you will find a range of high-quality freeze dryers (lyophilizers) from Labconco designed to meet your laboratory’s dehydration needs. Labconco freeze drying equipment ensures optimal preservation of products while extending shelf life and maintaining their original qualities. Select from a product below to get started or contact us today for more information.