SLOW PHOS products are a form of slowly soluble poly-phosphate available in small, glassy beads. As their name implies, SLOW PHOS products are engineered to dissolve at a controlled concentration to prevent scale and formation corrosion. SLOW PHOS can be fed at different concentrations in order to fit particular treatment situations or requirements. Normally a concentration of SLOW PHOS at threshold levels of 0.5-5.0 ppm poly-phosphate will inhibit scale and corrosion. Industrial cooling towers Refrigeration equipment Vending machines Air conditioning equipment Water purifying equipment Water coolers Pre-filter for RO equipment Evaporative coolers Coffee machines Food service equipment Water wells Ice machines Domestic water systems