pH Neutratlization Cartridge, For Use With Pentek 150067-75, Pentek 150150-75, Application pH neutralization, remineraliztion, corrosion prevention The Aries Filterworks pH neutralization Calcor cartridge is designed with a blend of Corosex(R) and Calcite(R) for pH neutralization. The product blend allows the pH to be corrected over a more effective range. It helps neutralize acidic waters by allowing the calcium carbonate and magnesium oxide media to dissolve as the water flows through the filter, raising the pH of the water and increasing the alkalinity. Helps eliminate the effects of corrosive water and prevents corrosion of piping and fixtures.