Aries 12" Inline Fluoride Reduction filters with Quick Connect utilize the advanced media technology of ResinTech® SIR-900 media, a synthetic aluminum oxide that remove Fluoride by a chemical reaction with the media. ResinTech® SIR-900 has minimal shrinkage /swelling and low-pressure loss, and can be used over a wide pH range. Aries Inline filters cartridges are designed for low-flow, point-of-use filtration.