water filters membrane hollow fiber MWCO:from 5k to 500k Dalton Material: ... ,PVDF,PP,PS,PES Dia:4", 6", 8", 10" water filters with UF Membrane for water filtration & separation.Hollow fiber ultrafiltration ... -180daysChemicals Flushing Time15-120minsChemicalsCitric acid,NaOH / NaClO,H2O2 Ultrafiltration water filters