Toray CSM Nanofiltration Membrane NE4040-40 4 Inch NF Membrane (20-40% NaCl Rejection) Data Sheet NE4040-70 4 Inch NF Membrane (40-70% NaCl Rejection) Data Sheet NE4040-90 4 Inch NF Membrane (85-97% NaCl Rejection) Data Sheet NE8040-40 8 Inch NF Membrane (20-40% NaCl Rejection) Data Sheet NE8040-70 8 Inch NF Membrane (40-70% NaCl Rejection) Data Sheet NE8040-90 8 Inch NF Membrane (85-97% NaCl Rejection) Data Sheet