The Pentek PS5-10C water filters reduce extra fine dirt, sand, sediment, silt, rust particles, and scale particles. The Pentek PS5-10C water filter is resistant to chemicals and corrosion. The Pentek PS5-10C filter cartridge is designed for purity, bacteria resistance, and chemical resistance. The Pentek PS5-10C spun fibers form a true gradient density from outer to inner surfaces. The Pentek PS5-10C replacement water filter will not impart taste, odor or color to the liquid being filtered when used within the recommended temperature limit. The Pentek PS5-10C water filters can be used on chlorinated or non-chlorinated water supplies. NOTE: Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system. The Pentek PS5-10C filter is a 5 micron extra fine sediment water filter cartridge made of spun bonded polypropylene. Pentek PS5-10C water filters are manufactured from 100% pure polypropylene. The Pentek PS5-10C water filter cartridges fit in whole house water filter systems and Reverse Osmosis Systems. Fits most standard housings that accept 10" x 2.5" water filter cartridges Constructed with true gradient density from outer to inner surfaces Resistant to chemicals and corrosion Materials tested and certified by NSF international to NSF/ANSI standard 42 Manufactured from spun-bonded 100 percent pure polypropylene