Industrial Foam Control BWF160 Silicone Defoamer for Industrial Water Treatment Systems BWF160 is a nonionic silicone defoamer developed for industrial water treatment systems. It is supplied as a milky-white flowable emulsion designed for rapid foam knockdown, continued suppression and easy dispersion in water-based systems. The product has a stated pH of 6-8 and a general reference dosage of 50-300 ppm, with final use levels determined by the actual wastewater and operating