Reverse Osmosis drinking water purifier, 5 stages RO water purifier, RO water filters, for tap water. Counter top Reverse Osmosis drinking water purifier: Model: RO-50CWith automatic backwash systemRO water purifiers and RO water filter for home use.Reverse Osmosis pure water system with boost pump.Water type: Tap waterTDS inlet: Below 1000ppmOutput pure water TDS: around 0.03ppm (depending on ...