A Reactor is the term for a vessel in the chemical processing industries that is used for a variety of process operations, including: product mixing, chemical reactions, batch distillation, liquid extraction, polymerization, solids dissolution, and other forms of reaction, mixing, or catalyst functions. A reactor consists of a tank or body with an agitator and heating or cooling system. Vessels are usually fabricated with Stainless Steel, Carbon Steel, Glass Lined Steel or High Alloy Steel, depending on the corrosiveness of the chemicals or products being used