KDF & UF MEMBRANE FOR PURIER & HEALTHIER WATER. Our water filtration system also contains Kinetic Degradation Fluxion (KDF), which is a high-purity copper-zinc alloy, ideal for removing heavy metals and acid radical ion in your water supplies. Furthermore, its UF membrane effectively eliminates harmful substances such as bacteria, Escherichia coli and colloidal suspensions in your water supplies making it totally SAFE TO CONSUME. FILTER REPLACEFILTMENT IN SECONDS WITHOUT TOOLS. Say goodbye to complicated systems and all the headshakes they causes you. To change your EGW-Combo water filter, just close the ball valve and press the water outlet button. When the water stops flowing, turn the old cartridge clockwise and remove it from the cap. Place the new cartridge under the cap, align it with the center and push it into the cap. Turn the cartridge counterclockwise, rinse the new cartridge for 10 minutes and you’re all set!