The accumulation of microbiological slimes biofilm and general bio-fouling in cooling water systems reduces system efficiency increases operating and maintenance costs and raises risks to safety and health. Our polymeric dispersent is a synthetic organic anti-foulant which inhibits the deposition of fouling materials on the heat transfer surfaces. It eliminates fouling caused by dead microbiological growth phosphates silicates metallic oxides silt and other air-borne materials. Thus it keeps surfaces clean maintains a high rate of heat transfer and aids the formation of corrosion inhibitor film.