DuPont FilmTec TW30-1812-100HR – 1.8" Reverse Osmosis Membrane

Elevate your home water purification with the Dow® FilmTec™ TW30-1812-100HR 100 GPD High-Rejection RO Membrane Element.

This advanced tap water reverse osmosis membrane from DuPont combines high flux with premium rejection performance, producing up to 100 gallons per day (15.8 liters per hour) of crisp, contaminant-free water. Featuring new high-rejection membrane chemistry and a high active membrane area with twin-leaf design, it achieves an impressive 98% stabilized salt rejection (minimum 96%) at standard test conditions of 50 psi.

Perfect for under-sink RO systems where you need more purified water without sacrificing quality, the TW30-1812-100HR excels in low-to-moderate feed pressure applications while maintaining excellent contaminant removal. It effectively reduces dissolved solids, heavy metals, nitrates, and other impurities—delivering great-tasting water for drinking, cooking, coffee, ice, and more.

Built with the legendary reliability of FilmTec™ elements, this membrane offers consistent performance, faster stabilization after installation, and proven durability in real-world residential conditions. It is dry-shipped for extended shelf life and easier handling.

Key Benefits & Features:

• 100 GPD high-flux output — Produces more purified water than standard 75 GPD membranes, ideal for families or higher usage
• 98% stabilized salt rejection — Superior purification for cleaner, healthier water
• Optimized for low pressure — Excellent performance at typical household 50–60 psi
• High active area & twin-leaf design — Maximizes efficiency and flow
• Robust in hard water — Resists scaling for longer service life with proper pre-filtration
• Dry-shipped — Longer shelf life and cleaner installation
• NSF/ANSI 58 certified (material safety) — Trusted for safe use in drinking water systems
• Universal 1812 size — Fits standard residential RO housings (seals in 2.0–2.05" ID vessels)

Technical Specifications:

• Permeate Flow Rate: 100 GPD (15.8 L/h) at 50 psi
• Stabilized Salt Rejection: 98% (minimum 96%)
• Membrane Type: Polyamide Thin-Film Composite (TFC)
• Maximum Operating Pressure: 150 psi (10 bar)
• Maximum Operating Temperature: 113°F (45°C)
• pH Range (Continuous): 2–11
• Free Chlorine Tolerance: < 0.1 ppm
• Maximum Feed Flow Rate: 2.0 gpm
• Dimensions: 1.75" diameter × 11.74" length

Whether you're upgrading an existing system or building a new high-capacity residential RO setup, the FilmTec™ TW30-1812-100HR gives you the perfect balance of high production volume and reliable rejection. It is the go-to choice for homeowners who want more pure water without increasing system size or pressure