Labfirst supplies high-quality vacuum drying ovens, freeze dryers and spray dryers for industry and research facility. Equipped with powerful vacuum pumps and precise temperature controls, our dryers are perfect drying solutions for food, chemicals and pharmaceuticals.
Vacuum drying oven is made up of stainless steel that can bear the high vacuum pressure without any kind of deformation. They are divided into hollow trays which increases the surface area for heat conduction. The materials to be dried are kept on the trays inside the vacuum dryer and pressure is reduced by means of vacuum pump. The dryer door is tightly shut and steam is passed through the space between trays and jacket so that the heat transfer occurs by conduction.
Freeze dryer is a kind of drying equipment which mainly uses the principle of sublimation. The material is rapidly frozen at low temperatures, and then in a suitable vacuum, the frozen water molecules sublimate directly into a process of water vapor escape. Freeze-dried products have excellent rehydration and little moisture, and can be stored and transported for a long time at room temperature after suitable packaging. Because of its incomparable advantages, Freeze dryer is more and more favored by people, and has been increasingly widely used in medicine, biological products and food.
Spray dryer is mainly used to produce trace particle powder for universities, research institutes and enterprises' laboratories in food, medicine and chemical industry. It has broad spectrum applicability to all solutions such as emulsion and suspension, and is suitable for drying heat-sensitive substances such as biological products, biological pesticides, enzyme preparations, etc. The material is heated only when they sprayed into mist size particles, so they are just instantaneously heated and can keep these active materials maintain its active ingredients.