PureT 5 MICRON MELT BLOW POLYPROPYLENE SEDIMENT FILTER Sediment filters are made of fine melted polypropylene, which is then blown and spun in a cylinder-like form. The main function of a sediment filter is to remove large and fine particles from your drinking water; such as sand, dirt, silt, and rust particles. PureT 5 MICRON CARBON BLOCK FILTERS Block carbon filters are made of fine coconut shell carbon. Because this filter is made of block carbon (Forming a cylinder block) it will offer a much better filtration for suspended particles and bad tastes of many organic compounds. PureT INLINE GRANULAR CARBON FILTER Also known as polishing filters because they would be the last stage of any standard reverse osmosis circuit. Being made of high quality coconut shell carbon, the inline filter stabilizes the water taste quality and further removes any traces of bad tastes and odors. 50 GALLONS PER DAY CSM THIN MEMBRANE FILTER CSM Membrane is the main components of any reverse osmosis unit. Made with thin film flat sheet. This membranes provides up to 98% reduction rate of bacteria.