Mixing Systems, Inc. (MSI), a Dayton, Ohio based manufacturer of submerged jet aeration and jet mixing systems, has been successfully designing waste water treatment systems since 1985. Mixing Systems, Inc. has engineers with over twenty years experience in design, application, marketing and manufacturing of jet aeration systems. Employees include a former Project Manager of the company which pioneered jet aeration systems. Designs are computerized, enabling Mixing Systems, Inc. to respond to your needs with custom designs and proposals in just one to three days. The jet mixing system works on the principle of one fluid contacting another fluid or gas through a series of jet nozzles.