FILMTEC brackish water reverse osmosis membrane elements provide consistent, outstanding system performance in light industrial applications.FILMTEC BW30-4040 is the industry standard for reliable operation and production of the highest quality water.Features the industry's thickest feed spacer (34 mil) to lessen the impact of fouling.May be cleaned over the widest pH range (pH 1-13) for the most effective cleaning.Elements with a hard shell exterior are recommended for systems with multiple-element housings containing three or more membranes, as they are designed to withstand higher pressure drops. Product Name Nominal Active Surface Areaft2 (m2) Permeate Flow Rategpd (m3/d) Stabilized Salt Rejection(%) FILMTEC BW30-4040 78 (7.2) 2400 (9.1) 99.5 Permeate flow rate and salt rejection based on the following test conditions: 2000 ppm NaCl, 225 psig (15.5 bar), 77°F (25°C), and 15% recovery. Permeate flow rates for individual elements may vary +/-20%. For the purpose of improvement, specifications may be updated periodically.