3M Water Filtration Systems help provide consistent high quality water for commercial ice maker machines within restaurants, cafés, quick service restaurants, coffee shops, convenience stores, and other foodservice outlets. The Replacement Cartridge HF90-S is designed for the 3M High Flow Series System ICE190-S which helps reduce sediment, chlorine taste and odor, cysts , bacteria , and scale at flow rates up to 5 gpm. Built-in scale inhibition reduces the ability of calcium and magnesium to precipitate on the evaporator plates as hard scale. Revolutionary Integrated Membrane Pre-Activated Carbon Technology (I.M.P.A.C.T.) dual-zone media cartridge construction combines a membrane in series with premium activated carbon to provide superior throughput and cartridge life. Filter Specs: 5 gpm flow rate and 54,000 gallon capacity. Sizing: low flow cubers to 1,450 lbs., high flow cubers to 1,000 lbs., and flakers to 2,400 lbs. Based on testing using Cryptosporidium parvum oocysts. Reduction of water-borne bacteria as demonstrated with 99.99% reduction of surrogate organism E. coli (ATCC 11229) and P. fluorescens (ATCC49642) in manufacturer's lab test. As tested by manufacturer.