The LG 400 R is a high-performance Brackish Water Reverse Osmosis (BWRO) membrane, typically 8"x40" (8040 size), known for combining high salt rejection (around 99.6%) with excellent fouling resistance and durability, making it ideal for industrial/municipal water treatment, high-salinity brackish water, and wastewater reuse, using advanced Polyamide TFC/TFN