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Calcite Filters

Raise the pH of RO permeate to make it non-aggressive and compatible with copper piping. Self-Limiting to correct pH only excessive enough to reach a noncorrosive equilibrium.

Available in 10” & 20” Standard and Big Blue Sizes, these calcite filter cartridges will work in standard filter housings.

Calcite Filter Cartridge Ordering Details

Model No. For Use in Housing Max Flow (GPM) Capacity @ 10ppm Capacity @ 20ppm Capacity @ 30ppm Capacity @ 40ppm Capacity @ 50ppm Capacity @ 60ppm
H-F2510CALCITE 10” Standard 5 8,486 4,243 2,829 2,122 1,697 1,414
H-F2520CALCITE 20” Standard 5 26,737 13,369 8,912 6,684 5,347 4,456
H-F4210CALCITE 10” Big Blue 20 26,737 13,369 8,912 6,684 5,347 4,456
H-F4220CALCITE 20” Big Blue 20 63,937 31,968 21,312 15,984 12,787 10,656

*The table above is an approximate idea of the life of calcite for PH adjustment. The actual value will depend on many factors including the flow rate, water TDS, etc. Use this information as a reference only. These are not guaranteed values.

What is Calcite?

Calcite is a naturally occurring calcium carbonate media. One of the advantages of Calcite is its self-limiting property. When properly applied, it corrects pH only enough to reach a non-corrosive equilibrium. It does not overcorrect under normal conditions. Upon contact with calcite, acidic waters slowly dissolve the calcium carbonate to raise the pH which reduces potential leaching of copper, lead and other metals found in typical plumbing systems.

Periodic backwashing will prevent packing, reclassify the bed and maintain high service rates. Depending on pH, water chemistry and service flow, the Calcite bed will have to be periodically replenished as the Calcite is depleted. As the Calcite’s calcium carbonate neutralizes the water, it will increase hardness and a softener may become necessary after the neutralizing filter.