DOW FILMTEC TW30-1812-50 Membrane

Product Description

DOW FILMTEC reverse osmosis (RO) membranes for home drinking water treatment units are the most reliable and consistent elements in the industry. Advanced membrane technology and automated fabrication allow Dow to precisely produce each and every element to tight, pre-defined specifications. Dow’s advanced and consistent RO element quality helps customers deliver systems that reliably provide low impurity drinking water. DOW FILMTEC elements are shipped dry for convenient handling and long shelf-life.


  • High flux results in greater yield (more water)
  • Shipped dry for long shelf life
  • FilmTec performance and quality

Important information

It is recommended that systems using these elements rinse the elements for 24 hours, prior to first use, to meet NSF/ANSI 58 Standard.

  • The first full tank of permeate must be discarded. Do not use this initial permeate for drinking water or food preparation.
  • Keep elements moist at all times after initial wetting.
  • To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution. Rinse out the preservative before use.
  • The membrane shows some resistance to short-term attack by chlorine (hypochlorite). Continuous exposure, however, may damage the membrane and should be avoided.
  • DOW FILMTEC™ Home Drinking Water Reverse Osmosis Elements may be covered under the DOW FILMTEC™ Reverse Osmosis and Nanofiltration Element Three-Year Prorated Limited Warranty, 609- 35010-1006 extended to OEMs. Such Limited Warranty is non- transferable. Contact a Dow representative for more information.
  • If operating limits and guidelines given in this Product Information Bulletin are not strictly followed, the Limited Warranty will be null and void. The OEM is fully responsible for the effects of incompatible chemicals and lubricants on elements. Use of any such chemicals or lubricants will void the Limited Warranty.
  • These membranes may be subject to drinking water application restrictions in some countries: please check the application status before use and sale. These elements have not been through the French approval process for use in potable water.
Product Part number Applied pressure psig (bar) Permeate flow rate gpd (l/h) Stabilized salt rejection(%)
TW30-1812-50 11036746 50 (3.4) 50 (7.9) 98

DOW FILMTEC™ residential elements are the most reliable, consistent and highest quality in the industry. Our elements offer the best balance of flow and rejection, producing industry leading flow rates (around 20% higher) than competitive elements at similar pressures.

DOW FILMTEC™ Residential Elements Feature:
  • Longer lifetimes that can reduce operating cost for OEM’s/brand owner
  • NSF safety certification and ability for NSF data transfer reducing certification costs
  • Fully-automated manufacturing that ensures consistent and high quality elements
  • Dry shipping for convenient handling and longer shelf-life
  • High quality elements significantly reduce or eliminate element Quality Control (QC) costs
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)
  • Maximum feed silt density index (SDI) 5
  • Free chlorine tolerance < 0.1 ppm
  • Under the sink water treatment
  • Point-of-use reverse water treatment systems
  • Production of home drinking water
[custom-documents] [/custom-documents]
(3 reviews) Write a Review
  • 5
    The best membrane supplier

    Posted by Mike S. on Apr 14th 2020

    shipped same delivery, thanks

  • 5
    High stock value

    Posted by Abdel El Nour on Nov 7th 2019

    We ordered large quantity and you were able to satisfy our need on time. Thanks!

  • 5
    Great solution for water treatment

    Posted by Mouloud A. on Nov 21st 2018

    Better prices here!

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