A freeze dryer machine, also known as a lyophilizer, is a device used to remove moisture from substances while preserving their structure and composition. It operates by freezing the material at low temperatures and then subjecting it to a vacuum, causing the frozen water to sublimate directly from solid to vapor without passing through a liquid phase. This process effectively dehydrates the material, leaving behind a dry product with minimal damage to its original properties. Freeze dryers are commonly used in various industries, including pharmaceuticals, food preservation, and biotechnology, to extend the shelf life of perishable goods, preserve sensitive materials, and facilitate transportation and storage.