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Filmtec BW30-400

Model: BW30-400

Brand: Filmtec


Delivers exceptional salt rejection rates, ensuring the production of high-quality permeate water.

Manufactured with durable materials, ensuring long service life and resistance to chemical damage.

Operates at low pressure, reducing energy consumption without compromising water quality.

Designed for ease of cleaning and maintenance, extending membrane life and performance.

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The Filmtec BW30-400 is a high-performance reverse osmosis membrane designed for industrial water treatment, particularly in desalinating brackish water. It features a large active area of 400 square feet, enabling high permeate flow rates up to 10,500 gallons per day. The membrane achieves a minimum salt rejection rate of 99.0%, with a typical rejection rate of 99.5%, ensuring the production of high-quality permeate. Designed for durability and efficiency, it operates within a broad pH range and withstands a maximum operating pressure of 600 psi, making it suitable for various water treatment applications.





Membrane Type

Polyamide Thin-Film Composite

Active Area

400 ft² (37 m²)

Feed Spacer Thickness

28 mil

Permeate Flow Rate

10,500 GPD (40 m³/d)

Stabilized Salt Rejection


Minimum Salt Rejection


Maximum Operating Temperature

113°F (45°C)

Maximum Operating Pressure

600 psi (41 bar)

Maximum Pressure Drop

15 psi (1.0 bar)

pH Range, Continuous Operation

2 - 11

pH Range, Short-Term Cleaning

1 - 13

Maximum Feed Flow

85 gpm (19 m³/hr)

Maximum Feed Silt Density Index


Free Chlorine Tolerance

< 0.1 ppm



Desalination of brackish water, municipal water treatment, wastewater reuse, and the production of potable water. Its high rejection rates and durability make it an excellent choice for industries looking to optimize their water treatment processes for both efficiency and cost-effectiveness.
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