Applied Membranes M-S2521A Seawater Desalination Reverse Osmosis Membrane produces high quality drinking water from seawater and is designed for use in Watermakers, Shipboard Applications, and Land-and-Sea Based Desalinators. Applied Membranes Inc. (AMI) 25x21 membrane elements can be used as direct replacements for SW30-2521, FT-MB-20, and most industry-standard 2.5" x 21" seawater RO membranes, in watermakers and seawater desalination systems using these elements - including: Ventura 150, Ventura 150C, Ventura 200T, Ventura 200c, Catalina 340c Compact, Cape Horn Extreme 330 Compact, Newport 400c Compact, Aquifer 150, Aquifer 200, Aquifer 200 Expedition, Aquifer 200 Power Pack Solar, Aquifer 360 Applied Membranes seawater reverse osmosis elements are made in the USA in our ISO 9001:2015 Certified manufacturing plant. M-S2521A Seawater membrane elements are wrapped in fiberglass to increased pressure and TDS tolerance 100% Quality Check and Integrity TestedHigh Quality RO Membranes with Consistent Performance Produces 300 GPD Freshwater from Seawater 99.6% Stabilized Salt Rejection Operating Conditions: Performance specifications based on 32,000 mg/l sodium chloride, 800 psi (5.5 MPa) applied pressure, 77ºF (25ºC) feed water temperature, pH 8 and 8% Recovery. Element permeate flow may vary ± 20%. Maximum operation pressure: 1000 psi (6.9 MPa)Maximum feed flow rate: 6 gpmMaximum operating temperature: 113° F (45° C)Maximum feed water turbidity: 1 NTUMaximum feed water SDI (15min): 5Chlorine tolerance: >0.1 PPMFeedwater pH range (Continuous): 2-11Feedwater pH Range (Cleaning, 30 mins): 1-12