CHNJIAYOU REPLACEMENT FILTERS: Ensure you are drinking pure-tasting, cleaner water by replacing your CHNJIAYOU pitcher filters regularly. Our replacement filters fit in all CHNJIAYOU pitchers and water dispensers, from the smallest pitcher to the largest. FIVE STAGE WATER FILTRATION: Unlike many water filters & pitchers, CHNJIAYOU filters use 5 stages of filtration, to bring you cleaner, better tasting water. Instead of carbon filtering only, our filters use Ion Exchange Technology to reduce contaminants. NOT AN ORDINARY WATER FILTER: CHNJIAYOU filters filter water in 5 stages, are NSF certified to reduce lead and other heavy metals. CHNJIAYOU removes 99.6% of total dissolved solids, 2X more than the leading brand (tested by independent lab).