ZeroWater 23-Cup Dispenser ZD-018 Dispenser Features NSF Certified to Reduce Lead. Eliminates 99.6% of All Dissolved Solids. Pull Pour Button. Filter Change Indicator. Built-in TDS Meter BPA Free. Why Zero Water It is a 5 stage filter which is more comprehensive than conventional 2 stage filters Ion Exchange Technology as opposed to simple carbon only Removes virtually all 99.6% detectable dissolved solids while leading brands removes up to 50% Description ZeroWater Dispenser is a pull and pour dispenser that gives excellent performance and its filter can remove around 99.6% of dissolved solids present in the impure water and provide high-quality drinking water. The 23-cup glass dispenser is best for outdoor events and commercial use with the no drip easy pour spigot.It also features a powerful 5-stage Dual-Ion Exchange Filter System that provides you crystal clear water for drinking and making ice. The dual ion exchange system removes almost every harmful particles present in incoming tap water like chlorine, lead ,zinc and many more. This dispenser has a color changing filter technology that helps in letting you know when to replace your filter cautiously and confirm that the water receives appropriate amount of treatment time to deliver a reading on your total dissolved solids meter. You get a TDS meter holder that lets you check the TDS level in your water before and after Filtration. Whats Included 23 Cup Dispenser w/ Water Filter 4 Extra Filters TDS Meter User Manual Stages of Filtration Patented 5-Stage Dual-Ion Exchange filtration system Stage 1 Coarse filter to remove fine particles/sediment. Stage 2 Distributor that maximizes contact time. Stage 3 Multi-layer system using activated carbon and oxidation reduction alloy. Stage 4 Comprehensive ION EXCHANGE array. Stage 5 Non-woven membrane to remove fine particles.