Harvest Right Pharmaceutical Freeze Dryer MediumPatented technology keeps the product fresh and preserves the potency, color, shape and nutrition of any organic material. Freeze drying retains 97% of the nutritional value with a 25 year shelf life. The freeze dryer has built in intelligence. It automatically and perfectly manages the freeze drying process. 6. 5 sq ft of tray space. Shelf unit has shelves for 7 trays and 4 L of ice capacity. 110 V outlet. Maintenance: simply filter and replace oil.