DOW Filmtec SW30-4040 membrane is a high-performance reverse osmosis (RO) element designed for seawater desalination. It provides a production capacity of up to 1,200 gallons per day (4.5 m³/day) with a nominal salt rejection rate of 99.7%, ensuring superior water purity. This membrane features an active area of 85 square feet, and operates effectively under high pressures up to 1,200 psi (83 bar). It is suited for large-scale industrial and commercial applications. Designed for durability, the SW30-4040 maintains performance in varying conditions with an operating temperature range of 41-113°F (5-45°C).