8inch Dow Filmtec RO Membrane Element

The DOW™ FILMTEC™ BW30-400 is the product of choice when the highest quality
Permeate is required. It was the first 400 square foot membrane element on the market and
Continues to be widely used in new equipment and retrofits where system capital and
Productivity are factors.

Dow's superior automated manufacturing technology results in the most consistent
Performance element-to-element and year-after-year.

BW30-400 elements deliver high flow and high rejection without being chlorinated during
The manufacturing process. This is one reason why DOW FILMTEC elements are more
Durable and may be cleaned over a wider pH range (pH 1-13) than other RO elements.

With more than a decade of proven performance, BW30-400 is the product you can rely
On for years of trouble-free operation.


1. Permeate flow and salt rejection based on the following standard conditions: 2, 000 ppm NaCl, 225 psi (15.5 bar), 77° F (25° C), pH 8 and 15% recovery.
2. Flow rates for individual elements may vary but will be no more than 15% below the value shown.
3. Sales specifications may vary as design revisions take place.
4. Active area guaranteed +/-3%. Active area as stated by Dow is not comparable to nominal membrane area often stated by some manufacturers. Measurement method
Described in Form No. 609-00434.