100 GPD Membrane - DOW Filmtec

Click on image to zoom
View full size image

More Views

100 GPD Membrane - DOW Filmtec

100% Recommend this to a friend (2 of 2)

SKU: 200133
Please wait...


1-3 day service on orders over $249

What's this?

Ships today
order in
11h 48m

Quick Overview

DOW Filmtec 100 GPD membrane features a 98% rejection rate at 50 PSI which makes it the most commonly used 100 GPD membrane used in the aquarium industry. If you require slightly faster water production and have good water pressure this is one of the better options.

TIP -Brand new membranes will have a slight coating on them to help preserve the membrane until it is ready for use.  It is recommended to discard all water that is produced by the new membrane for the first hour of operation. 

For Product Data Sheet Click Here


Ask a question

Product Questions

Can this 100 GPD membrane be used in other RO system? Such as the water general ro6100DINT? Thanks!
Question by: Montana Lynn on May 22, 2016 8:24:00 PM
Great question! Our RO membranes our standard 10" membranes, and should work with most 3rd party units. That said, compatibility cannot be guaranteed.
Answer by: Carter (Admin) on May 25, 2016 2:53:00 PM
Your 100 GPD filter is listed as TW30-1812-100HP. Dows sight has it listed as TW30-1812-100HR. What is the difference between the two?
Question by: Henry Bosman on Feb 2, 2016 12:40:00 PM
Great question!
There is no difference in the membrane. It appears as if the HR vs HP may be a typo on our side. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Feb 24, 2016 4:34:00 PM

Full Details

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%.


There are no videos related to this product.


2 Items

  • Awesome Product By TJ on 6/4/2016

    This replaced a 150 GPD RO membrane that I previous had. I had bought the unit used from someone else and I was going thru DI resin so fast it wasnt even funny. Changed out my RO membrane with this one and its working great!
  • Working well oninitial installation By James on 4/9/2016

    I have just concluded a build up of my own design system. A Staged 2X100 GPD RO Membrane system and with the addition of a booster pump these unit are performing exceptionally well.