Enhanced silica removal from your water supply is made possible with this powerful deionization cartridge from Spectrapure. Designed for RO/DI and DI systems, these cartridges feature the highest silica, nitrate, phosphate, and heavy metal removal of any 10 in. DI cartridge available. Features a higher capacity than other comparable cartridges. Optimized for post RO or post distillation filtration.Uses non color-indicating resins for lowest TOC levels. Capable of working at 8 GPH.