A fermenter is designed to provide a controlled and favorable environment for the growth of cells irrespective of their nature either they are bacterial or fungi or plant or animal cells. Few aspects to be considered while we design a fermenter are about its proper aeration and agitation, low power consuming, controlling of operational and fermenter parameters should be provided, should be aseptically operated, sampling facilities should be provided, design should ensure minimal use of labor for operation, cleaning, harvesting and maintaining the fermenter, it should be economical in its manufacture.