Looking to “green” your water treatment program? United 308 is formulated to control corrosion and scale deposition in closed loop heating and cooling systems and is Earth Smart® Certified. It is formulated to be safer in use for both the user and the environment. Contains a blend of organic-based corrosion control compounds for ferrous and non-ferrous metal systems. When used as part of a complete United Laboratories’ Cycle Smart® cooling tower treatment program, it minimizes environmental impact.