Filmtec TW30-2521 Reverse Osmosis Membrane

Category: Reverse Osmosis (RO) Membrane – Brackish Water

Model: DOW / DuPont Filmtec TW30-2521

Membrane Type: Polyamide TFC (Thin-Film Composite)

Element Size: 2.5" × 21" (2521)

✔ General Specifications

• Permeate Flow Rate: 325 GPD (~1.23 m³/day)
• Salt Rejection: 99.5%
• Active Surface Area: ≈ 13 ft² (~1.2 m²)
• Application: Residential and light commercial RO systems

✔ Operating Conditions

• Recommended Operating Pressure: 225 psi (~15.5 bar)
• Maximum Pressure: 600 psi (~41 bar)
• Maximum Operating Temperature: 45 °C
• pH Range (continuous operation): 2 – 11
• pH Range (cleaning, short-term): 1 – 13
• Maximum Free Chlorine Tolerance: < 0.1 ppm
• Maximum Feedwater SDI: SDI ≤ 5

✔ Dimensions

• Diameter: 2.5" (≈ 6.4 cm)
• Length: 21" (≈ 53.3 cm)
• Connection Type: Standard 2521 element configuration

✔ Typical Applications

• Drinking water purification
• Light commercial RO systems
• City water or brackish water treatment
• Restaurants, laboratories, small industrial setups