... membrane,ro membraneFRP Membrane Housing 8" Membrane Housing for Reverse Osmosis System1) Diameter: 8" 2) length: 1 , 2 ,3 ,4 , ... -1110)Cleaning pH range:2-12(less than 30min)suitabe for Felmtech,Hydranautics ,Trisep ,CSM ,Koch ,GE ,vontron and other standard ...