POLYPHOSPHATE WATER FILTER Limescale & Corrosion Protection Polyphosphate is a popular media for limescale and corrosion protection, regularly used in both point of use and point of entry applications. The technology works by coating the limescale-forming minerals (such as calcium and magnesium) to prevent them from sticking to surfaces and allowing them to flow freely through pipework. Common uses for polyphosphate include water heaters, washing machines, coffee machines and combi boilers. Our polyphosphate filters are suitable for flow rates up to 1,500 litres per hour, at up to 500ppm of hardness. Water treated with polyphosphate can be heated up to 75-80⁰C if heated above this temperature the media gradually loses its effectiveness. How Long Do These Polyphosphate Scale Inhibitor Filters Last?The filter cartridge is reusable, so should only be replaced if damaged. The media inside dissolves into your water and lasts for approximately 70,000L before it needs replacing. The clear outer shell of the filter makes it easy to see how much media is left inside. Why Choose Our Polyphosphate Water Filter? Protects against both limescale and corrosion Clear filter cartridge for easy check of lifespan High flow rates up to 1,500 litres per hour Tried and tested technology Industry standard fitment Compatible Products:Filter Cartridge HousingsPolyphosphate Crystals High Quality Water Filters We pride ourselves on a comprehensive range of high quality water filters, for all uses and applications. Can’t find what you’re looking for? Get in touch with a member of our team or browse all of our water filters. Browse all Water Filters →