GE Desal's AK-Series low energy commercial reverse osmosis membranes offer high rejection rates for brackish and tap water conditions and are recognized for their high flux ability and superior sodium chloride rejction rates. The A-Series, family of proprietary thin-film reverse osmosis membrane elements are characterized by high flux and excellent sodium chloride rejection. AK Low Pressure Brackish Water Elements are selected when high rejection and low operating pressures are desired. These elements allow significant energy savings since good rejection is achieved at operating pressures as low as 100 psig (689 kPa).