The Qfx SW 400 ES joins the QuantumFlux product line of seawater reverse osmosis membranes. The membrane features 400 sq ft of active membrane area with a permeate flow rate of 13,700 gpd. The high-flux, high-rejection membrane is certified by NSF Standard 61 and features high-quality salt rejection and film nanocomposite membranes for safe use in potable water production.