{"product_id":"lg-sw-400-gr","title":"LG SW 400 GR 7,500 GPD at 800 PSI 8 x 40 inch 99.85% Rejection Seawater Membranes","description":"\u003ch2 style=\"text-align: center;\"\u003e\u003cstrong\u003eLG SW 400 GR Seawater Reverse Osmosis Membrane (7,500 GPD, 99.85% Rejection)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eLG SW 400 GR\u003c\/strong\u003e is a high-performance 8-inch seawater reverse osmosis (SWRO) membrane element manufactured by LG Chem, engineered for large-scale desalination applications where both permeate water quality and energy efficiency are critical. Built using LG's proprietary Thin Film Nanocomposite (TFN) membrane technology, this element is part of LG's \"GR\" (Great Rejection) product line, purpose-designed to deliver excellent salt and boron rejection while keeping energy consumption competitive for high-salinity seawater feeds.\u003c\/p\u003e\n\u003cp\u003eThe SW 400 GR features a 34-mil feed spacer, which improves resistance to fouling and supports more effective cleaning cycles over the life of the element — an important consideration for coastal desalination plants and marine environments where feedwater quality can vary. With an active membrane area of 400 square feet, it delivers a permeate flow rate of 7,500 GPD (28.4 m³\/d), a stabilized salt rejection of 99.85%, and a boron rejection of 93%, making it well suited for single-pass and multi-pass desalination plant designs serving municipalities, industrial facilities, and marine or offshore installations.\u003c\/p\u003e\n\u003cp\u003eBacked by LG's proven track record in the global seawater RO market, the SW 400 GR offers well-documented, long-lasting reliability, giving system designers and plant operators a dependable option for producing high-quality freshwater from seawater sources.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification Table\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eSPECIFICATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eModel Number\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eSW 400 GR\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eManufacturer\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eLG Chem (LG Water Solutions)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMembrane Type\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eThin Film Nanocomposite (TFN) Polyamide\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eActive Membrane Area\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e400 ft² (37 m²)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003ePermeate Flow Rate\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e7,500 GPD (28.4 m³\/d)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eStabilized Salt Rejection\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e99.85%\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMinimum Salt Rejection\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e99.7%\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eBoron Rejection\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e93%\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eFeed Spacer Thickness\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e34 mil\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eTest Conditions¹\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e32,000 ppm NaCl, 5 ppm Boron, 800 psi (55 bar), 25°C (77°F), pH 8, 8% Recovery\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMax Applied Pressure\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e1,200 psi (82.7 bar)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMax Feed Flow Rate\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e75 GPM (17 m³\/h)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMax Concentrate-to-Permeate Ratio\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e5 : 1 (per element)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMax Pressure Drop (Per Element)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e15 psi (1.0 bar)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMax Operating Temperature\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e113°F (45°C)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMax Feed Turbidity\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e1.0 NTU\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMax Feed Silt Density Index (SDI, 15 min)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eSDI 5.0\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMax Free Chlorine Concentration\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u0026lt; 0.1 ppm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003epH Range (Continuous)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e2 – 11\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003epH Range (Cleaning)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e2 – 13\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003ePermeate Flow Variation\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e± 15%\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e¹ Permeate flow rate, stabilized salt rejection, and boron rejection are based on the stated standard test conditions. Individual element performance may vary by up to ±15% from stated nominal values.\u003c\/p\u003e","brand":"LG","offers":[{"title":"Default Title","offer_id":43267699867746,"sku":"LG SW 400 GR","price":643.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2555\/0478\/files\/w2t857392_bb205bb03_200221_lg_bw_4040_es_4in_ro.jpg?v=1777850494","url":"https:\/\/hydrocomponents.us\/products\/lg-sw-400-gr","provider":"Hydrocomponents \u0026 Technologies Inc.","version":"1.0","type":"link"}