SILIPHOS prevents scale and stops corrosion. It utilizes the phenomenon that minute concentrations of polyphosphates are sufficient to inhibit the deposition of scale onto metallic surfaces. Because of its phosphate and silicate content, SILIPHOS also inhibits corrosion by forming a thin protective layer on the metal surface. A SILIPHOS concentration of 2 - 3 ppm is sufficient to achieve both of these effects.
Mixed bed resin cartridges are typically used with/in Reverse Osmosis (RO) or Di systems, where the application requires the "product water" to have little to no mineral content present, or for the water to have a low conductivity.