The Lyph-Seal Tray Dryer can freeze dry up to 8 bags and seal under vacuum, allowing for long term storage or secure shipping. Includes 4 heated shelves with control from ambient to +50C for optimized lyophilization. The optional Lyph-Seal Bag Freezer Form ensures uniform thickness during sample pre-freezing and promotes even drying with maximized shelf contact. Uniform sample thinkness allows for more efficient drying and workflow standardization. Sanitary zipper-seal bags made from durable PET/PE. Designed for use with the Lyph-Seal Tray Dryer system and compatible with commercially available impulse sealers. Pack of 100. Freezer Safe. Do not microwave or boil.