What is Combiphos?
Combiphos is the name of the crystal spheres used inside the Combimate unit.
Combiphos is a harmless food-grade polyphosphate compound that prevents scale and stops corrosion. It utilises 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 Combiphos also inhibits corrosion by forming a thin protective layer on the metal surface. A Combiphos concentration of 2 -3 ppm (parts per million) is sufficient to achieve both of these effects.
Existing hard scale, i.e calcium carbonate, cannot be easily removed by Combiphos. In these installations, Combiphos will prevent further scaling up. Limescale can build up in all untreated hot water pipes and systems whatever material they are made of, including plastic.