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WaterSolutions DOW FILMTEC BW30HR-440i

The DOW™ FILMTEC™ BW30HR-440i element is a high-performing, high productivity element combining the highest active membrane area available in the industry today with the maximum rejection brackish water reverse osmosis (RO) membrane. It incorporates Dow's innovative BW30HR membrane sheet technology, designed to deliver the highest quality RO permeate. This is combined with the cleanability of a 28 mil feed spacer, to minimize capital expenses in high-purity industrial water applications, without increasing operating flux.

Nominal Active Surface Area ft² (m²)	Permeate Flow Rate gpd (m³/d)	Typical Boron Rejection (%)	Stabilized Salt Rejection (%)	Minimum Salt Rejection (%)
440 (41)	12,650 (48)	83.0	99.7	99.4

Permeate flow and salt rejection based on the following test conditions: 2000 ppm NaCl, 225 psig (15.5 bar), 77°F (25°C), pH 8 and 15% recovery.
Flow rates for individual elements may vary, but will be no more than +/-15%.
Sales specifications may vary as design revisions take place.
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 (168KB PDF).
Typical solute stabilized rejections based on the following standard test conditions: 2,000 ppm NaCl, 225 psi (15.5 bar), 77°F (25°C), pH 7 and 15% recovery, 50 ppm SiO2, 5 ppm B, 100 ppm NO3-, 100 ppm NH4+, or 100 ppm IPA.

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Product Datasheet (PDF)
English (64KB)