... , and purifying substance;Ultrafiltration (UF) Membrane FiltersItem: UFM90, UFM160, UFM200, UFM4040, UFM8040, UFM4021 Protective shell material: UPVC, ABS,STAINLESS STEEL Hollow fiber material: PP ... / outlet dia. mm: 32, 40, 50 Membrane filtration mode: Internal force, external force Pure water flow rate (m3/h): 0.5-1 ...