{"product_id":"calcium-gac-fluoride-reduction-filter-cartridge","title":"Calcium GAC Fluoride Reduction Filter Cartridge","description":"\u003cp\u003e\u003cstrong\u003eFluoride reaches tap water two ways: many cities add it, and it also occurs naturally from the erosion of mineral deposits.\u003c\/strong\u003e If you want less of it in the water your family drinks, the media inside the filter is what matters most.\u003c\/p\u003e\u003cp\u003eThis bone char fluoride filter cartridge is filled with Crystal Quest Calcium GAC: black granular bone char made by calcining cattle bones until only a mineral framework of hydroxyapatite and a carbon surface remain. That mineral framework is what captures fluoride.\u003c\/p\u003e\u003ch3\u003eAt a glance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTargets fluoride\u003c\/strong\u003e in municipal water, with capacity stated for each size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal bone char:\u003c\/strong\u003e 70 to 76% hydroxyapatite and 9 to 11% carbon, per Crystal Quest's media data sheet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA natural mineral reaction\u003c\/strong\u003e locks fluoride into the media as fluorapatite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBonus adsorption:\u003c\/strong\u003e the carbon and mineral surfaces also adsorb some heavy metals, such as lead\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour sizes, 0.5 to 6 GPM,\u003c\/strong\u003e for countertop, under-sink and whole house housings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat you are looking at\u003c\/h3\u003e\u003cp\u003eEach cartridge is a sealed shell packed with Calcium GAC granules, closed with polypropylene end caps and Buna-N gaskets. The label shows the flow direction, the part number for each size and the replacement steps. The granules themselves are black, like charcoal. Each end cap has 1-micron pads behind its openings.\u003c\/p\u003e\u003ch3\u003eHow bone char removes fluoride\u003c\/h3\u003e\u003ch4\u003eThe chemistry: a swap inside the crystal\u003c\/h4\u003e\u003cp\u003eHydroxyapatite holds hydroxide (OH) groups in its crystal structure. Fluoride carries the same charge and is almost the same size, so it can take the hydroxide's place. The result is fluorapatite, a stable, insoluble mineral that stays locked in the media instead of returning to your water. At higher fluoride levels, some fluoride also precipitates as calcium fluoride.\u003c\/p\u003e\u003ch4\u003eA carbon surface, too\u003c\/h4\u003e\u003cp\u003eUnlike aluminum oxide fluoride media, bone char also carries carbon. Calcium GAC has a total surface area of about 200 m²\/g, about 50 m²\/g of it carbon. Bone char has proven itself in purifying sugar syrups, and in your water its carbon surface adds adsorption of some dissolved organic and colored compounds.\u003c\/p\u003e\u003ch4\u003eWhy pH and contact time matter\u003c\/h4\u003e\u003cp\u003eBone char takes up the most fluoride in slightly acidic water, near pH 6, and works less efficiently as pH rises. Fluoride uptake is also gradual, so contact time matters: slower flow gives the media more time to work, which is why each size has its own rated flow.\u003c\/p\u003e\u003ch3\u003eWhat it reduces\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003ePrimary target (printed on the cartridge label):\u003c\/strong\u003e fluoride, specifically inorganic fluoride in municipal water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAlso adsorbed by bone char\u003c\/strong\u003e (a capability of the media, not a separate tested rating for this cartridge):\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeavy metals such as lead, which Crystal Quest's media data sheet lists among bone char's strengths\u003c\/li\u003e\n\u003cli\u003eSome dissolved organic and colored compounds, through its carbon surface\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNot designed to treat:\u003c\/strong\u003e bacteria and viruses, nitrate, hardness, or chlorine and chemical tastes as a dedicated stage. For those, Crystal Quest pairs it with a \u003ca href=\"https:\/\/crystalquest.com\/products\/smart-filter-cartridge\"\u003eSMART Filter Cartridge\u003c\/a\u003e and other stages.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it right for my water?\u003c\/strong\u003e It is built for inorganic fluoride in municipal water. If your fluoride is organic or comes from a well or another natural source, talk to a Crystal Quest specialist first. Capacity is rated at hardness below 100 ppm. Bone char is animal-derived; if you prefer a non-animal media, choose the \u003ca href=\"https:\/\/crystalquest.com\/products\/aluminum-oxide-fluoride-filter-cartridge\"\u003eAluminum Oxide Fluoride Reduction Filter Cartridge\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eWhy Crystal Quest\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOur default fluoride media.\u003c\/strong\u003e Calcium GAC is the standard fluoride cartridge media across Crystal Quest's cartridge systems. The \u003ca href=\"https:\/\/crystalquest.com\/products\/aluminum-oxide-fluoride-filter-cartridge\"\u003eAluminum Oxide Fluoride Reduction Filter Cartridge\u003c\/a\u003e (activated alumina) is an interchangeable alternative for people who prefer it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA published media spec.\u003c\/strong\u003e Hydroxyapatite and carbon content, surface area, pore structure and hardness are listed in the Specifications tab, from Crystal Quest's own data sheet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear scope.\u003c\/strong\u003e We tell you the water it is built for and the conditions behind every capacity figure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOver 1,000,000 people served since 1994.\u003c\/strong\u003e Crystal Quest builds under ISO 9001 quality management, has made water filtration in the USA for over 30 years and offers lifetime support by phone, email or chat.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhere it fits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle specialty systems:\u003c\/strong\u003e the fluoride stage on its own\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble specialty systems:\u003c\/strong\u003e after a SMART cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple specialty systems:\u003c\/strong\u003e last stage, after a carbon block and SMART\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOnly have one housing? The \u003ca href=\"https:\/\/crystalquest.com\/products\/smart-calcium-gac-fluoride-reduction-cartridge\"\u003eSMART + Calcium GAC Fluoride Reduction Cartridge\u003c\/a\u003e combines both in one cartridge. Choose the size printed on your current cartridge or in your order history: 2-7\/8\" x 9-3\/4\" (CQE-RC-04126), 2-7\/8\" x 20\" (CQE-RC-04127), 4-5\/8\" x 9-3\/4\" (CQE-RC-04128) or 4-5\/8\" x 20\" (CQE-RC-04129).\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003cdiv class=\"cq-product-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eDoes bone char remove fluoride from water?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Fluoride swaps into the hydroxyapatite in bone char and forms fluorapatite, a stable mineral that stays in the media. How much it removes depends on your fluoride level, pH, flow and how much capacity remains, so test your water to see your results.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eIs Calcium GAC the same as bone char?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Calcium GAC is Crystal Quest's name for its bone char media: black granular bone char made by calcining cattle bones, mostly hydroxyapatite with a carbon surface. It is a different material from coconut shell carbon.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan I use it on well water?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eIt is built for inorganic fluoride in municipal water. For fluoride from a well or another natural source, or organic fluoride, talk to Crystal Quest first so we can recommend the right treatment.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eBone char or aluminum oxide: which fluoride cartridge should I choose?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eCalcium GAC (bone char) is Crystal Quest's standard fluoride cartridge media. Aluminum oxide is the alternative, and the right pick if you prefer a media that is not animal-derived. Keep the media your system specifies unless you are changing it on purpose.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow often should I replace a fluoride filter cartridge?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eIt depends on your fluoride level, water use and flow. Test the treated water and replace when fluoride rises. The capacity figures in the Specifications tab are estimates at hardness below 100 ppm.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eIs bone char vegan?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eNo. Bone char is made from cattle bone. Choose the Aluminum Oxide Fluoride Reduction Filter Cartridge for a non-animal fluoride media.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhich size fits my housing?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eMatch the actual size on your current cartridge: 2-7\/8\" x 9-3\/4\" fits 2.5\" x 10\" housings, 2-7\/8\" x 20\" fits 2.5\" x 20\", 4-5\/8\" x 9-3\/4\" fits 5\" x 10\" Big Blue and 4-5\/8\" x 20\" fits 5\" x 20\" Big Blue.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n###\n\u003ch3\u003eCalcium GAC fluoride cartridge specifications\u003c\/h3\u003e\u003cp\u003ePublished ratings apply to the selected cartridge and listed conditions. Capacity is an estimate that depends on incoming water contaminants and usage.\u003c\/p\u003e\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\u003cb\u003eSIZE\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\u003cb\u003eFITS HOUSING\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\u003cb\u003eFLOW RATE\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\u003cstrong\u003eCAPACITY\u003cbr\u003e(\u0026lt;100 PPM HARDNESS)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003eCQE-RC-04126\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e2-7\/8” x 9-3\/4”\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e2.5\" x 10\"\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e.5 gpm (1.9 lpm)\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e4,500 ppm Fluoride*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003eCQE-RC-04127\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e2-7\/8” x 20”\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e2.5\" x 20\"\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e2.5 gpm (9.4 lpm)\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e9,000 ppm Fluoride*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003eCQE-RC-04128\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e4-5\/8” x 9-3\/4”\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e5\" x 10\" Big Blue\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e3 gpm (11.4 lpm)\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e9,000 ppm Fluoride*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003eCQE-RC-04129\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e4-5\/8” x 20”\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e5\" x 20\" Big Blue\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e6 gpm (22.7 lpm)\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e15,000 ppm Fluoride*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eCalcium GAC media (Crystal Quest data sheet)\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eBlack granular bone char, made by calcining cattle bones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTricalcium phosphate (hydroxyapatite)\u003c\/td\u003e\n\u003ctd\u003e70% to 76%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarbon content\u003c\/td\u003e\n\u003ctd\u003e9% to 11%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcium carbonate\u003c\/td\u003e\n\u003ctd\u003e7% to 9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface area (BET N₂)\u003c\/td\u003e\n\u003ctd\u003e200 m²\/g total; 50 m²\/g carbon surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePore size distribution\u003c\/td\u003e\n\u003ctd\u003e7.5 to 60,000 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePore volume\u003c\/td\u003e\n\u003ctd\u003e0.225 cm³\/g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHardness number\u003c\/td\u003e\n\u003ctd\u003e80 minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcid soluble ash\u003c\/td\u003e\n\u003ctd\u003e3% maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIron\u003c\/td\u003e\n\u003ctd\u003eLess than 0.3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia pH\u003c\/td\u003e\n\u003ctd\u003e8 to 10 typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBulk density\u003c\/td\u003e\n\u003ctd\u003e40 lb\/ft³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTreatment method\u003c\/td\u003e\n\u003ctd\u003eIon exchange and precipitation on hydroxyapatite (fluoride forms fluorapatite), plus carbon adsorption\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eInorganic fluoride in municipal water; consult Crystal Quest for well or natural sources\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConstruction Materials\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eOperating Specifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e• Polypropylene End Caps\u003c\/td\u003e\n\u003ctd\u003e• Minimum Operating Pressure: 20 psi (1.4 bar)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e• Polyolefin Inner\/Outer Wraps\u003c\/td\u003e\n\u003ctd\u003e• Maximum Operating Pressure: 60 psi (4.1 bar)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e• Polyethylene Netting\u003c\/td\u003e\n\u003ctd\u003e• Minimum Operating Temperature: 40° F (4° C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e• Buna-N Gaskets End Caps\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e• Maximum Operating Temperature: 90° F (32° C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e• End Pads: 1-micron pads behind the end-cap openings\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e*Capacity is an estimate only and is dependent on influent water contaminants and filter usage. Rated at hardness below 100 ppm.\u003c\/p\u003e\n\u003cp\u003e*Cartridge color is subject to change without notice.\u003c\/p\u003e\n\u003cp\u003e*Use only on water that is microbiologically safe. Run water 5 to 10 minutes before first use.\u003c\/p\u003e\n","brand":"Crystal Quest Water Filters","offers":[{"title":"2-7\/8” x 9-3\/4” \/ Single","offer_id":67810393686104,"sku":"CQE-RC-04126","price":69.0,"currency_code":"USD","in_stock":true},{"title":"2-7\/8” x 9-3\/4” \/ Pack of 2","offer_id":67810393718872,"sku":"CQE-RC-04126-2PK","price":138.0,"currency_code":"USD","in_stock":true},{"title":"2-7\/8” x 9-3\/4” \/ Pack of 4","offer_id":67810393751640,"sku":"CQE-RC-04126-4PK","price":276.0,"currency_code":"USD","in_stock":true},{"title":"2-7\/8” x 20” \/ Single","offer_id":67810393784408,"sku":"CQE-RC-04127","price":183.0,"currency_code":"USD","in_stock":true},{"title":"2-7\/8” x 20” \/ Pack of 2","offer_id":67810393817176,"sku":"CQE-RC-04127-2PK","price":366.0,"currency_code":"USD","in_stock":true},{"title":"2-7\/8” x 20” \/ Pack of 4","offer_id":67810393849944,"sku":"CQE-RC-04127-4PK","price":732.0,"currency_code":"USD","in_stock":true},{"title":"4-5\/8” x 9-3\/4” \/ Single","offer_id":67810393882712,"sku":"CQE-RC-04128","price":194.0,"currency_code":"USD","in_stock":true},{"title":"4-5\/8” x 9-3\/4” \/ Pack of 2","offer_id":67810393915480,"sku":"CQE-RC-04128-2PK","price":388.0,"currency_code":"USD","in_stock":true},{"title":"4-5\/8” x 9-3\/4” \/ Pack of 4","offer_id":67810393948248,"sku":"CQE-RC-04128-4PK","price":776.0,"currency_code":"USD","in_stock":true},{"title":"4-5\/8\" x 20\" \/ Single","offer_id":67810393981016,"sku":"CQE-RC-04129","price":276.0,"currency_code":"USD","in_stock":true},{"title":"4-5\/8\" x 20\" \/ Pack of 2","offer_id":67810394013784,"sku":"CQE-RC-04129-2PK","price":552.0,"currency_code":"USD","in_stock":true},{"title":"4-5\/8\" x 20\" \/ Pack of 4","offer_id":67810394046552,"sku":"CQE-RC-04129-4PK","price":1104.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0862\/1250\/9784\/files\/calcium-gac-fluoride-reduction-filter-cartridge-crystal-quest-water-filter-cartridges-1263260701.webp?v=1792508989","url":"https:\/\/filtervilla.com\/products\/calcium-gac-fluoride-reduction-filter-cartridge","provider":"Filter Villa","version":"1.0","type":"link"}