{"product_id":"nf90-400-34i-filmtec-dupont-dow-membranes-copy","title":"NF90-400\/34 DuPont FilmTec 10,000 GPD at 70 PSI 8 x 40 inch 98.7% Nanofiltration Membranes","description":"\u003ch2 style=\"text-align: center;\"\u003e\u003cstrong\u003eDuPont FilmTec™ NF90-400\/34 High Rejection Nanofiltration Membrane (10,000 GPD)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eFilmTec™ NF90-400\/34\u003c\/strong\u003e is a high-area, high-productivity 8-inch nanofiltration element engineered for large-scale municipal and industrial water treatment. Manufactured by DuPont Water Solutions, it is purpose-built to deliver high-quality permeate while selectively removing a high percentage of contaminants such as salts, hardness, nitrates, and iron, along with organic compounds including pesticides, herbicides, and trihalomethane (THM) precursors. The element also provides high rejection of total organic carbon (TOC) and per- and polyfluoroalkyl substances (PFAS), making it well suited for modern drinking water compliance requirements.\u003c\/p\u003e\n\u003cp\u003eBuilt on DuPont's proven polyamide thin-film composite membrane technology, the NF90-400\/34 combines a large active membrane area with low net driving pressure, allowing effective contaminant removal at low operating pressures. This translates into lower energy consumption for utility operators without sacrificing water quality — an important consideration for water softening, demineralization, and reuse applications.\u003c\/p\u003e\n\u003cp\u003eThe element is constructed with a 34-mil feed spacer, which improves tolerance to suspended solids and enables more effective cleaning of organic foulants, extending cleaning cycle intervals and reducing long-term maintenance costs. With 400 square feet of active membrane area, the NF90-400\/34 produces a permeate flow rate of 10,000 gallons per day (38 m³\/d), and it is rated for a minimum salt rejection of 98.7%, delivering dependable, cost-effective performance for utility managers, OEMs, and system integrators.\u003c\/p\u003e\n\u003cp\u003eThe NF90-400\/34 also offers a wide cleaning pH tolerance (pH 1–13), supporting effective cleaning protocols that help maintain long-term flux and rejection stability across the life of the element.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Applications:\u003c\/strong\u003e Municipal drinking water treatment, water reuse, and industrial water demineralization.\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\u003eNF90-400\/34\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\u003eFilmTec™ (DuPont 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\u003ePolyamide Thin-Film Composite\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eElement Dimensions\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e8.0\" Diameter x 40.0\" Length\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\u003e10,000 GPD (38 m³\/d)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMinimum Salt Rejection¹\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e98.7%\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eActive Surface 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\u003eFeed Spacer Thickness\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e34 mil (Low Differential Pressure design)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eTest Pressure\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e70 psi (4.8 bar)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMax Operating Pressure\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e600 psi (41 bar)\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 Pressure Drop (Per Vessel, min. 4 elements)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e50 psi (3.5 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 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 Feed Silt Density Index (SDI)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eSDI 5\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eFree Chlorine Tolerance\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 Operation)\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 (Short-Term Cleaning, 30 min.)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e1 – 13\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 Minimum salt rejection based on standard test conditions: 2,000 ppm MgSO₄ feed, 70 psi (4.8 bar), 77°F (25°C), 15% recovery. Individual element flow rates may vary but will not fall more than 15% below the stated value. Specifications are subject to change as DuPont design revisions take place; always verify current specifications against the manufacturer's official Product Data Sheet before purchase or installation.\u003c\/p\u003e","brand":"DuPont","offers":[{"title":"Default Title","offer_id":41462040625250,"sku":"NF90-400\/34","price":890.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2555\/0478\/products\/image_1cc985f5-9b99-432d-a0fd-7cdc592e01c2.jpg?v=1777850465","url":"https:\/\/hydrocomponents.us\/products\/nf90-400-34i-filmtec-dupont-dow-membranes-copy","provider":"Hydrocomponents \u0026 Technologies Inc.","version":"1.0","type":"link"}