... DescriptionRO system is widely used in water supply treatment, purification for tap water, seawater and brackish water, pure water and ultra ... water TDS limit: Below 2000PPM(for other water source, please provide us water report for detailed analysis for choosing RO membrane)3. Water ... viruses into the RO membrane, the accuracy is 5 um, for holding back any large particulates such as large iron, dust ...