Filmtec membrane BW30-400,Filmtec ro membrane Excellent quanlity and beautiful coating,durable and reliable ! Competitive Pric Filmtec membrane housing, Filmtec ro membrane ,Dow membrane Filmtec ro membrane BW30-400 Nominal Active Surface Area ft2 (m2)Permeate Flow Rategdp( m3/d)Stabilized Salt Rejection (%)Minimum Salt Rejection (%)400(37)10500(40)99.599.0 Filmtec ro membrane BW30-400