Pharmaceutical Process

Vacuum in the reaction process is necessary to avoid high temperatures, to remove reaction products or to maintain low pressure in the reaction process.

Vacuum filtration is a fast filtration technique used to separate solids from liquids.
The most commonly used vacuum filtration is Nutsche Filter and Rotary Drum Filter.

Vacuum drying is generally used for the drying of those substances which are hygroscopic and heat sensitive and is based on the principle of creating a vacuum to decrease the pressure below the vapor pressure of the water or other liquid.

Drying is the vaporization and removal of water or other liquid from a solution, suspension, or other solid-liquid mixture to form a dry solid.

Freeze-drying is a dehydration process typically used to preserve a perishable material or make the material more convenient for transport.
Freeze-drying works by freezing the material and then reducing the surrounding pressure to allow the frozen water in the material to sublime directly from the solid phase to the gas phase.