SCALTROL SC-50 WATER TREATMENT SYSTEM (5040)Stop mineral scaling by introducing a measured amount of polyphosphate into the water. Most water supplies are usually saturated with large amounts of minerals, such as calcium carbonate (lime scale), copper, iron, copper, iron, and manganese, which can cause corrosion and scaling. When water is saturated with minerals, any increase in temperature or pressure drop will cause the minerals to form scale. So, water passing through a water faucet, water