The Nitto membrane 8040 is a high-performance filtration element designed for reverse osmosis (RO) systems. These membranes are typically used for removing dissolved solids, bacteria, viruses, and other impurities from water, making them perfect for drinking water treatment, wastewater reuse, and industrial process water applications . Nitto membranes are known for their high rejection rates, low fouling tendency, and long membrane life. They're also compact, making them ideal for space-saving installations. The 8040 model is part of Nitto's ESPA (Energy Saving Polyamide) series, which combines energy efficiency with high rejection rates .