Information About Lyophilizer Manufacturers in India

Posted by SHASHANK GARG on October 21st, 2019

A lyophilizer or freeze dryer is a type of equipment that executes water removal process for preserving perishable materials either to extend their shelf life or to make a material more convenient to transport (or both). Lyophilizers work by first freezing an item or material, reducing pressure, and then adding heat so that frozen water within the material can sublimate. Lyophilizer manufacturers in India produce highly efficient, superior quality, material or food drying equipment to ensure safe and effective preservation of various types of goods, including consumable goods.

Lyophilizers work in three major phases including the freezing phase, primary drying or sublimation phase, and secondary drying or adsorption phase. The initial freezing phase is considered the most critical. While different equipment uses various techniques or methods to freeze product, most of them do so in a chilled bath, freezer, or shelf, cooling the material below freezing point to ensure and facilitate sublimation instead of melting. As a result, the material retains its physical form. Lyophilizers rapidly freezes material so as to prevent cell walls of biological materials from breaking and creating less than ideal freeze-drying results. The primary drying or sublimation phase, on the other hand, lowers the pressure and adds heat to the material so that water contained in it can sublimate. Vacuum speeds up sublimation while the machine’s cold condenser creates a surface where water vapor can adhere and solidify. In the same way, the condenser protects and shields the vacuum pump from water vapor. During the sublimation phase, up to 90% of the water within the material is removed. Lyophilizer manufacturers in India make certain that enough heat is applied during the sublimation process as anything over the prescribed level of heat can alter and damage the material’s structure. The secondary drying or absorption phase, on the other hand, serves as the final stage of the freeze-drying process. This phase removes ionically bound water molecules from the material by increasing the temperature to levels higher than the primary drying stage, hence breaking the bond between the water molecules and the material. Up to 1 to 5% of residual moisture is removed during this stage of the freeze-drying process.

When seeking out lyophilizer manufacturers in India, look for freeze drying equipment exporters that have an established name in the industry and ones that continually push the boundaries of innovation to create leading edge products that increase efficiency, all the while keeping costs reasonable. The best lyophilizer manufacturers in India bring to the table deep expertise in creating advanced grade equipment and tools that ensure longevity and superb engineering, resulting in machines that deliver the best results.

About the Author:

Shashank Garg is the Director of Gem Allied Industries Private Limited, India and has keen interest in the principles and different processes of thermal drying.