Introduction to Nanofiltration Membranes: A Versatile Solution for Water Treatment Nanofiltration (NF) membranes are a critical technology in the field of water purification, separating particles based on size, charge, and molecular weight. Positioned between reverse osmosis and ultrafiltration in terms of filtration tightness, NF membranes are known for their ability to selectively remove divalent ions, organic molecules, and some dissolved salts while allowing smaller...