This SHURflo EVERPURE (R) Fresh Water Filter Cartridge has filter down to 0.5 micron and is sold individually. Everpure® ADC Quick Change Full-Timer Cartridge fits QL2/QL3 Everpure Water Treatment Systems. Exclusive Micro-Pure® filter considerably reduces the taste and odor of chlorine, dirt, rust cysts, and asbestos down to 1/2 Micron. Replacement is as easy as changing a light bulb. Requires no tools. Tested and certified by NSF.• Helps Make Great-Tasting Tasting Coffee, Tea, Juices And Other Beverages• Produces Cleaner, Better Tasting Ice• Lasts For 700 Gallons Or Up To One Year• Reduces Chlorine Taste And Odor• Reduces Cysts And Asbestos• Yields Consistent High-Quality Water Throughout Life Of Cartridge• Treated With Bacteriostatic To Effectively Reduce The Growth Of Bacteria On The Filter Media• Limited 1 Year Warranty Micron Rating: 0.5 Micron Material: Micro-Pure ® Plated With Carbon Quantity: Single | Shurflo Ev959206 Fresh Water Filter Cartridge | Micro-Pure Plated With Carbon