Cartridge Pack Type I R/O and Distilled Feed (1) High capacity; two bed (1) Organic removal; activated carbon (1) Replacement Cartridges; Final Filter 0.2 micron with Fitting Bell (1) Replacement Cartridges; Organic Free for High Purity and Low Organics (Final Position) (1) Replacement Cartridges; Pretreatment for Deionized Feedwater (1st Position) (1) Replacement Cartridges; Pretreatment of Distilled or RO Feedwater (1st Position) (1) Replacement Cartridges; Ultrapure Mixed Bed for High Resistivity (2nd or Final Position) (1) Ultrapure Cartridge (1) Ultrapure; mixed bed (1)