DuPont FilmTec TT-1812-50 – 1.8" Reverse Osmosis Membrane

Discover dependable, high-quality water purification with the DuPont™ FilmTec™ TapTec™ TT-1812-50 50 GPD Reverse Osmosis Membrane Element.

Part of DuPont’s trusted TapTec™ residential RO series, this thin-film composite (TFC) membrane offers the perfect balance of performance, reliability, and value. It produces up to 50 gallons per day (7.9 liters per hour) of clean, great-tasting water while delivering 98% stabilized salt rejection (minimum 96%) under standard test conditions.

Designed specifically for tap water applications, the TT-1812-50 effectively removes dissolved solids, heavy metals, nitrates, and other common contaminants—making it an ideal upgrade or replacement for most standard under-sink reverse osmosis systems. Its optimized design ensures quick stabilization, consistent flow, and long-term performance, even in varying household conditions.

Backed by DuPont’s advanced membrane technology and precision manufacturing, this element provides the reliability homeowners expect from the FilmTec™ brand—now at an outstanding value point.

Key Benefits & Features:

• 50 GPD production rate — Sufficient for small to medium households or focused drinking/cooking water needs
• 98% stabilized salt rejection — Strong contaminant removal for safer, better-tasting water
• Excellent value performance — Leverages proven DuPont thin-film composite technology
• Fast stabilization — Reaches high rejection quickly after installation
• Dry-shipped — Extended shelf life and cleaner, easier handling during replacement
• Universal 1812 sizing — Fits standard residential RO housings (seals in 2.0–2.05" ID pressure vessels)
• Material safety — Compatible with NSF/ANSI 58 certified drinking water systems

Technical Specifications:

• Permeate Flow Rate: 50 GPD (7.9 L/h) at 60 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): 4–11
• Free Chlorine Tolerance: < 0.1 ppm
• Maximum Feed Flow Rate: 2.0 gpm
• Dimensions: 1.75" diameter × 11.74" length

Whether you're building a new RO system or replacing an aging membrane, the FilmTec™ TT-1812-50 delivers reliable purity without unnecessary premium markup. It performs best with proper pre-filtration (sediment + carbon) to protect against chlorine and particulates that can shorten membrane life.