Dow FilmTec BW60-1812-75 75 GPD TFC Membrane for Undersink RO System (Replaces TW30-1812-75)

Overview

The Dow FilmTec BW60-1812-75 is a 75 GPD thin-film composite (TFC) reverse osmosis membrane designed for undersink systems. It fits standard 1.8 x 12 inch housings and is NSF/ANSI Standard 58 listed, signaling alignment with industry standards for home drinking water filtration.

In everyday use, this membrane is engineered to deliver consistent water production while helping to reduce dissolved contaminants that influence taste, clarity, and aroma. While performance can vary with environmental conditions, the membrane is designed for reliable operation under common household pressures and water chemistries.

Key specifications

• 75 Gallon Per Day (7.9 liters per hour) capacity
• 98% stabilized salt rejection (minimum 96%)
• NSF/ANSI Standard 58 listed
• Membrane dimensions: 11.75" overall length, 1.75" diameter; fits standard 2" ID housings

What to know about compatibility and replacement

This membrane line is the replacement for the TW30-1812-75; in some catalogs you may see BW60-1812-75 listed. Our MB-1812-75F part number confirms reliable compatibility with many residential RO setups.

Installation considerations and care

• For chlorinated municipal water, a carbon/sediment pre-filter is recommended to protect the membrane
• Rated around 50 psi for FilmTec home elements; actual water production may vary with pressure and temperature

When upgrading an undersink system, this FilmTec membrane offers a balance of performance and reliability, with a focus on practical, real-world filtration for daily drinking water needs. If you’re evaluating an upgrade, consider your typical water pressure, filtration goals, and whether a pre-filter is already part of your setup. While outcomes can vary, the membrane is designed to provide dependable filtration performance over time without requiring complex maintenance.