WellBlue 3 Pack Drop In Brita Style Alkaline Water Filter Replacement.. 7 Stage Mineral Water Filter.Works With Wellblue, Brita Style Pitchers & Dispensers (3 Pack) Drop In Style Cartridge-Works With Wellblue, Brita Style Pitchers & Dispensers (3 Pack) BPA free *Negative potential Balls to reduce the ORP value Body material: Food grade plastic, Color: White, Filter material: PMMA or AS Plastic, Nano-KDF (With high-tech Nano-metal clusters media), Active carbon, Tourmaline ceramic cartridge. Active carbon: Remove Chlorine, dust, grain, odor, and so on. BPA free. Ion exchange resin: Remove Ca2+, Mg2+, and certain heavy metals such as lead copper Raises water to a High Alkaline (pH balance) and ORP -200mv, With high-tech micro multi-level filtration, Without re-contamination. Package: 3 PC individual aluminum foil packs, Cartridge limit: 60 gal. or 60 to 90 days to keep water tasting great, depending on the number of person using the pitcher. This does work with the most of Brita style pitchers & dispensers.