Filmtec RO Reverse Osmosis Membranes

Filmtec RO Reverse Osmosis Membranes by Dow Filmtec

  1. Dow Filmtec ® TW30-2026 RO reverse osmosis membrane
    Dow Filmtec ® TW30-2026 RO reverse osmosis membrane
    Dow Filmtec ® TFC RO reverse osmosis membrane. Extra fast recovery and high production flow rate. Learn More
    $259.99 Special Price $179.95
  2. DOW FILMTEC TW30-1812-24 RO #93430 Reverse Osmosis Membrane- 1000
    Dow Filmtec ® TW30-1812-24 RO # 93430 reverse osmosis membrane
    Dow Filmtec ® TFC 24 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" # 93430 Learn More
    $89.99 Special Price $56.99 As low as $37.99
  3. DOW FILMTEC - TW30-1812-36 #80719 RO Reverse Osmosis Membrane-1000
    Dow Filmtec ® TW30-1812-36 # 80719 RO reverse osmosis membrane
    Dow Filmtec ® TW30-1812-36 TFC 36 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Part # 80719 Learn More
    $99.99 Special Price $59.99 As low as $39.99
  4. DOW FILMTEC -  TW30-1812-50 RO Reverse Osmosis Membrane #80722-1000
    Dow Filmtec ® TW30-1812-50 RO reverse osmosis membrane # 80722
    Dow Filmtec ® TW30-1812-50 TFC 50 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Part # 80722 Learn More
    $84.99 Special Price $69.99 As low as $54.99
  5. DOW FILMTEC TW30-1812-75 (BW60-1812-75) #114731 RO Reverse Osmosis Membrane- 1000
    Dow Filmtec ® TW30-1812-75 (BW60-1812-75) #114731 RO reverse osmosis membrane
    Dow Filmtec ® TW30-1812-75 (BW60-1812-75) TFC 75 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Extra fast recovery and high production flow rate. #114731 Learn More
    $119.99 Special Price $74.99 As low as $49.99
  6. DOW FILMTEC - TW30-1812-100 HR RO Reverse Osmosis Membrane 170102- 1000
    Dow Filmtec ® TW30-1812-100 HR RO reverse osmosis membrane 170102
    Dow Filmtec ® TFC 100 GPD RO reverse osmosis membrane - standard size 1.75" X 11.75" Extra fast recovery and high production flow rate. Learn More
    $129.99 Special Price $84.99 As low as $59.99
  7. Dow Filmtec 4"×40" TW30-4040
    Dow Filmtec TW30-4040 Standard RO Reverse Osmosis Membrane
    FILMTEC TW30-4040 is the industry standard for reliable operation and production of the highest quality water. Filmtec TW30- 4040 by Dow is 4" Dia x 40" Length with a flow rate of 2400 Gal/Day. It has a flow rate pressure of 225 PSI and a Stabilized Salt rejection 99.5%. Learn More
    $299.99 Special Price $287.00 As low as $243.00
  8. Dow Filmtec 4" x40" Lowest Pressure XLE
    Dow Filmtec Lowest Pressure XLE RO Reverse Osmosis Membrane
    4"x40" Filmtec Dow Lowest Pressure XLE Membrane. It has extra low energy with a flow rate of 2,600 Gal/Day. It's size is 4" Dia. x 40" Length with a Test Pressure of 100 PSI and a Stabilized Salt Rejection rate at 99% Learn More
    $329.00 Special Price $300.00 As low as $256.00
  9. Dow Filmtec ® BW-30-400 commercial reverse osmosis membrane
    Dow Filmtec ® BW-30-400 commercial reverse osmosis membrane
    Dow Filmtec ® BW-30-400 commercial reverse osmosis membrane - 8" D X 40" L - up to 10,500 GPD flow rate. Learn More
    $899.99 Special Price $675.00 As low as $649.99
  10. Dow Filmtec 4"×40" SW30-4040
    Dow Filmtec SW30-4040 Sea Water RO Reverse Osmosis Membrane
    FILMTEC DOW SW30-4040 membrane elements have the highest flow rates available to meet the water demands of both sea-based and land-based . FILMTEC SW30-4040 elements may also be operated at lower pressure to reduce pump size, cost and operating expenses. SW30-4040 by Dow is a 4"-40" Length with a flow rate of 1,950 Gal/Day with a pressure of 800 PSI and Stabilized Salt Rejection rate of 99.4%. Filmtec TW30-4040 is the industry standard for reliable operation and production of the highest quality water. Learn More
    $482.50 Special Price $473.00 As low as $429.00

Easy TDS Membrane Performence Calculator
See If It is Time To Replace Your Membrane

Simply enter your Feed Water TDS and RO Water TDS into the boxes above and click "Submit". The percentage of TDS Rejection will be displayed. We normally recommend membrane replacement once you drop below 75%. This may vary in areas with high TDS in the feed water.

See our selection of TDS meters under Water Tests


Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.

* Dow Filmtec ® is the registered trademark of Dow Filmtec , the manufacturer of Dow Filmtec ® brand water treatment equipment.