UHF03 800G RO Filter for UB200\UB200D\UB200T0. 0001m RO Membrane With DuPont membrane technology, the Hydrofast UHF03 RO filter offers an ultra fine 0. 0001 micron filtration level, removing over 99% of bacteria, viruses, and chemical contaminants such as TDS, PFAS, PFOS, and PFOA. The UHF03 provides a powerful barrier against harmful impurities, ensuring cleaner, healthier water. Enhanced Water Taste The UHF03 effectively removes odors, heavy metals, and other harmful contaminants, delivering