Freeze-drying, also known as lyophilization, is a low temperature dehydration process that involves freezing the material, reducing pressure and adding heat to facilitate sublimation. Freeze-drying works by freezing the material, reducing surrounding pressure and adding heat to allow the frozen water in the material to transition directly from solid to gas without passing through the ... https://medium.com/@rokadevaishnavi51/here-is-an-1170-word-article-on-freeze-drying-equipment-99f0712f85a0