600GPD Remineralization Reverse Osmosis System - Waterdrop D6-MZKey Feature: [6 stage filtration] The filtration accuracy of the reverse osmosis membrane is 0. 0001m. The 6 stage filter reduces pollutants from water, including TDS, lead, chlorine, salt, nitrates, PFAS, lead, sodium, chromium, benzene, etc. Our RO system can reduce toxic chemicals such as vinyl chloride, ethylhexyl acrylate, isobutylene, ethylene glycol, monobutyl ether, according to the reverse osmosis membrane technical manual. *The activated