Preventol DP 1021 from Lanxess is a broad-spectrum biocide developed for use in industrial water systems to control and prevent biofilm formation. In addition to microbial control, this new blend helps to reduce the buildup of organic load on the surface of the water treatment systems, thereby minimizing the formation of biofilms. Preventol DP 1021 is effective against aerobic and anaerobic bacteria, including sulfate-reducing and acid-producing bacteria. It performs at low dosage levels (<100 ppm), is non-corrosive for common materials and chemistries used in water treatment, and is a non-sensitizing biocide.