Freeze-drying is used to preserve products containing water or solvents. Good preservation of fragrances, flavorings and ingredients with nutritional value is crucial in the foodstuff industry. With proper packaging and storage, freeze-dried products can be stored for a very long time without any appreciable loss of quality even at room temperature. Weight reduction will be up to 92%. Owing to their extremely large internal surface area, freeze-dried products have an optimal capacity to take up water again (reconstitution, rehydration). ALD industrial freeze-drying systems offer the best capabilities with respect to performance, versatility and product quality and lower heating temperatures by contact heating, hence a lower final temperature of the product and better flavor retention. Further-more they have more sublimation power per m2 of area.