The CTOS-Q10 is a 10” Qwik-Twist cartridge for use in OptiPure QTI10 series systems to reduce sediment down to 0.5-microns and reduce chlorine, taste & odor at a flow rate of 1.5 gpm for 15,000-gallons. The cartridge includes IsoNet, OptiPure's patented scale-inhibiting technology, which delivers consistent protection against the precipitation and accumulation of scale and provides a protective barrier to help guard against corrosion. The system is tested and certified by NSF International against NSF/ ANSI Standard 42 for the reduction of: Standard 42: Aesthetic Effects, Chlorine Reduction Taste and Odor Reduction Nominal Particulate Reduction, Class I