LG BW 4040 UES

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LG BW UES membranes offer high permeability at ultra-low feed pressure, significantly reducing operating costs:
suitable for low salinity brackish water applications.

Product Specifications      
Active Membrane
Area, ft² (m²)
Permeate Flow
Rate, GPD (m³/d)
Stabilized Salt
Rejection, %
Minimum Salt
Rejection, %
Feed Spacer,
mil
85 (7.9)  2,900 (11.0)  99.0 98.0 28
Test Conditions : 500 ppm NaCl at 25°C (77°F), 100 psi (6.9 bar), pH 7, Recovery 15%.
Permeate flows for individual elements will vary with no less than 85% of the specified datasheet flow.

For more details, please see the enclosed datasheet.


  • datasheetlgbw4040ueseng