Applications Food & Beverage Food Processing Freeze drying Freeze drying Freeze-drying, also known as lyophilisation, is a dehydration process typically used to preserve a perishable material or make the material more convenient for transport. Freeze-drying works by freezing the material and then reducing the surrounding pressure to allow the frozen water in the material to sublimate directly from the solid phase to the gas phase. Freeze drying main advantages: Freeze dried products can be stored at ambient temperature Less damage to the substance than other dehydration methods using higher temperatures : in particular color and shape Does not usually cause shrinkage of the material being dried (no volume reduction) Freeze drying, as processing frozen product can be carried out all year long (no seasonal effect) Application challenges in term of Pump temperature Low Heavy duty operation (cycles) Medium Dust / Powder / Particules Low Moisture High Related products Your request SOGEVAC Oil sealed rotary vane vacuum pumps SOGEVAC are being used in all areas of vacuum engineering. They are equally suited for both industrial production and research applications. They may be used to generate a rough and medium vacuum or as backing pumps in combination with Roots vacuum pumps or high vacuum pumps. E-Shop SCREWLINE Screw Fore Vacuum pumps E-Shop Roots Vacuum Pumps Roots vacuum pumps have been established in the area of vacuum technology for many years now. With them it is possible to improve the ultimate pressure of a pumping system by a factor of 10. E-Shop DRYVAC Dry compressing screw vacuum pumps E-Shop Interested to work with vacuum? Master the invisible force and check out our jobs! Job Openings Do you need documents and information in printed or electronic form? International Service Centres coordinate all Leybold Vacuum servicing activities Find your regional Leybold office, agent, representative or distributor Sitemap Imprint Legal and Data Privacy © 2017 Leybold