APEC High-Rejection 50 GPD Reverse Osmosis Membrane for ULTIMATE RO-45 & RO-PUMP Systems

  • For RO-45 and RO-PUMP models

  • Lab-tested for highest rejection guaranteed

  • Fast response with no break-in time required

  • TFC Spiral Wound Design for superior membrane flux

  • Effective under extreme conditions with wide operating limits

  • 100% Made In USA Made in USA Industry Standard Sized Membrane

  • Listed Price:$65.00
  • Total Saving:$10.00
  • Sales Price:$55.00

Options & Upgrades

Help opening the Membrane Housing

Protects & Seals O-ring to Prevent Leaks



    50 GPD High Rejection Rate RO Membrane

    DOW FILMTEC™ MEM-50 reverse osmosis membranes are the industry’s best and most reliable filters for home drinking water. These premium-grade membranes are selectively produced elements that have been specially tested and packed by the manufacturer to guarantee the highest contaminant rejection rates possible. Additionally, these membranes also offer the fastest response time, high flow rates and excellent removal capacity immediately after install with minimal settling in period. Available only through this website, APEC is proud to be able to offer these special MEM-50 membranes exclusively to our customers.

    DOW FILMTEC’s advanced membrane technology and automated fabrication allow their elements to deliver consistent performance that equipment suppliers, water treatment dealers, and residential customers can rely on. These FILMTEC membranes are deliver excellent performance in terms of flux, salt and organics rejection, and microbiological resistance.


    Operating Limits

    Membrane Type

    Polyamide Thin-Film Composite

    Maximum Operating Temperature

    113°F (45°C)

    Maximum Operating Pressure

    150 psig (10 bar)

    Maximum Feed Flow Rate

    2.0 gpm (7.6 lpm)

    pH Range, Continuous Operation


    pH Range, Short-Term Cleaning


    Maximum Feed Silt Density Index

    SDI 5

    Free Chlorine Tolerance

    < 0.1 ppm


    Specification Table

    APEC Item Code


    GPD (Gallon per Day @ 60psi)


    Stablized Salt Rejection %



    1.75 x 11.75L


    0.72 lbs
    1. Permeate flow rate and salt rejection based on the following test conditions: 250 ppm softened tap water at 50 psig, 77°F (25°C), and 15% recovery.
    2. Permeate flows for individual elements may vary +/-20%.
    3. Minimum stabilized salt rejection is 98.0%.

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