Biosperse biocide for control of bacteria, fungi and algae in industrial water systems such as recirculating water systems, pasteurizers, air washer systems, membrane separation systems, coatings, emulsion polymers and adhesives. Biosperse 250 provides long lasting killing effects and is recommended in systems with a pH between 6-9,5. Biosperse 250 is easily detoxified so it can be applied even in environmentally sensitive areas.