... matter and so on4. Micron filter--prevent any deposition of large Particles, some bacteria, and viruses into the RO membrane, ... The accuracy is 5um, for holding back any large particulates such as large iron, dust, suspended matter, impurity.5. High ... span. Hydranautics and DOW RO membranePurified drinking water treatment equipment is to produce high quanlity drinking water for drinking or ...