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Reverse Osmosis Membrane - Dow Filmtec

  • Product Description

    Dow is a leader when it comes to water treatment and filtration.  Their 75 GPD membrane has a 99% rejection ratio, and most other membranes cannot make that same claim.  Along with meeting NSF/ANSI standards the DOW membrane is hands down the best membrane for our hobby.


    Compatible with all 10" RO Membrane Housings. Be sure to change the flow restrictor if you change the flow of your membrane.

    Hands down the best membrane for our hobby.

    Compatible with all RO systems  

    FILMTEC reverse osmosis membrane elements for home drinking water are the industry's most reliable. Advanced membrane technology and automated fabrication allow these elements to deliver consistent performance that equipment suppliers, water treatment dealers, and residential customers can rely on. FILMTEC elements are shipped dry for convenient handling and long shelf-life. These elements are NSF/ANSI Standard 58 listed. Equipment suppliers can take advantage of FilmTec's Standard 58 listing and participation in the NSF Data Transfer Protocol to reduce costs for reduction claims for their systems.

    • Rated at 50 psi 
    • Will purify about 20% more water than competitive elements rated at 60 psi 


    1. Permeate flow and salt rejection based on the following test conditions: 250 ppm softened tap water, 77°F (25°C), 50 psi (3.4 bar), and 15% recovery.
    2. Permeate flow rates for individual elements may vary +/-20%.

    DOW Filmtec 100 GPD TW30-1812-100HP Membrane Specs:

    • 100 Gallons Per Day
    • ANSI/NSF 58 listed for material safety.
    • Dimensions: 1.83" W X 11.75" L
    • Stabilized Salt Rejection (%): 98.0
    • Permeate Flow* gpd @ 50 psi: 100

    *Permeate flow specifications are based on 500 mg/L NaCl solution at 50 psi (3.4 bar) inlet pressure, 77°F (25°C), 15% recovery after 24 hours. Individual element flux may vary ±20%.


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