Product Description Compatible model：WD-D6-B Waterdrop D6 RO system adopts advanced filtration technology. With an accuracy of 0.0001 μm, the 5-stage filter reduces most contaminants from water, including salt, atrazine, nitrates, PFAS, lead, sodium, chromium, etc. Two coconut carbon block layers reduce chlorine, taste, and odor to improve the water taste. Two PP cotton layers intercept sediment, rust, suspended solids, and other large particles. 0.0001 μm pore size RO membrane Safe filter media Fast water flow Easy to change filters Waterdrop FIST filter uses select filter media and has been through rigorous tests so that these five layers of filters can work as one to filter every drop of water. With a pore size of 0.0001μm, the huge DOW RO membrane can reduce most heavy metals and other impurities to prevent clogs. The carbon block, made from Sri Lankan coconut shell, is 100% organic and pure, providing a great solution to improve the taste of water. 12 months or 1,000 gallons, whichever comes first. This may vary depending on filtered water consumption. It takes only a twist to change the filter in 3 seconds. No tools required. On Dec-06-21 at 04:31:26 PST, seller added the following information: