Z.Plex filters are made from thermally bonded fibers of polypropylene. GE water & process technologies Certifies that it uses no resin binders, lubricants, antistatic or release agents, or other additives in the manufacture of these cartridges. Suitable to 160°f (71°c). rosave.Z filters for use in reverse Osmosis pretreatment and other Pure water applications. Available in 1 and 5 micron Pore sizes. The resin used for manufacturing the filter media meets the food contact requirement of the U.S., and is compliant. Applications • bottled water • beverage • electronics well Pro.Z filters for use in well injection, produced water disposal and other oil and gas applications. Available in 1, 5, 10 and 20 micron Pore sizes. Applications • well injection • produced water filtration • water flood/enhanced oil recovery • brine filtration • sea water filtration 100 percent greater dirt-holding capacity lowers total cost of filter operations up to twice the life of conventional depth filters up to 50 percent lower pressure drop.