Crystal Quest Calcite & Coconut Shell Granulated Activated Carbon (GAC) Filter Cartridges are used in the remineralization of soft, acidic or low pH water. This is accomplished by using Calcite, which is a naturally occurring calcium carbonate media and GAC, which works as a post polisher inside the cartridge. ITEM NUMBER SIZE FLOW RATE CAPACITY (<100 PPM HARDNESS) CQE-RC-04012 2-7/8” x 9-3/4” .5 gpm (1.9 lpm) 3,000 gallons* CQE-RC-04024 2-7/8” x 20” 2.5 gpm (9.4 lpm) 8,000 gallons* CQE-RC-04075 4-5/8” x 9-3/4” 3 gpm (11.4 lpm) 8,000 gallons* CQE-RC-04080 4-5/8” x 20” 6 gpm (22.7 lpm) 18,000 gallons* Construction Materials Fiber Media Mixed Blend End Caps Polypropylene Post-Filter Spun Polypropylene Outer Casting Polypropylene Expansion Pad Polypropylene Gasket Buna-N (Top) Temperature Rating 40°F to 145°F (4.4°C to 62.8°C) *Capacity is an estimate only and is dependent on influent water contaminants and filter usage.
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