The ZeroWater 40 cup glass dispenser uses the patented ZeroWater filtration system. Removes 99% of Fluoride from tap water. The 5-stage filter transforms your tap water into delicious, TDS-free drinking water. Includes a free Water Quality Meter to test your water to ensure the highest quality filtration on the market. ZeroWater\'s first layer of filtration, activated carbon and oxidation reduction alloy removes the chlorine taste you are accustom to with tap water. The Ion Exchange stage removes virtually all dissolved solids that may be left over from public water systems or even leached into your water from piping such as Aluminum, Lead, Zinc, Nitrate and more. Three additional stages are included to remove other contaminants and to ensure your water receives the appropriate amount of treatment time to deliver a \"000\" reading on your water quality meter. ZeroWater 5-Stage Dual Ion-Exchange Filter Features: Certified* to reduce Lead and Chromium. Premium 5-Stage Dual-Ion Exchange filtration system. Ion-Exchange system that removes virtually all dissolved solids in your water. The FDA requires the TDS level in PURIFIED bottled water to reach 000-010ppm. ZeroWater is the only filter in its class to achieve this level. Dimensions (L x W x H): 28 x 25 x 50.5 cm.