Brackish Water
BW 400 ES L
Energy Optimized
Energy-saving brackish water RO membrane designed for low-pressure operation (150 psi) to significantly reduce power consumption while maintaining exceptional performance.
Flow Rate
10,500 GPD
Salt Rejection
99.6%
Feed Spacer
34 mil
Pressure
150 psi
Active Area
400 ft²
Max Pressure
600 psi (41.3 bar)
Max Temp
45°C (113°F)
Max Flow
75 gpm
Continuous pH
2.0 – 11.0
Cleaning pH
2.0 – 12.0
Max SDI
5.0
Chlorine Tolerance
< 0.1 ppm
Weight
35 lbs
$573per element
Ships same day if ordered before 1:00 PM CST
1
Authorized NanoH2O (formerly LG Chem) distributor
Same-day shipping on orders before 1:00 PM CST
30-day returns on unopened items · 15% restocking fee applies
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Frequently Asked Questions
We offer same-day shipping for all BW 400 ES L membranes ordered before 1:00 PM CST. Typically, arrival takes 1-3 business days within the continental United States. We use heavy-duty packaging to ensure your membrane arrives in pristine condition.
The BW 400 ES L is a standard 8-inch industrial RO membrane. If your system currently uses 8040 (8-inch diameter, 40-inch length) membranes from DuPont Filmtec, Hydranautics, or Toray, this NanoH2O membrane (formerly branded LG Chem NanoH2O) is a direct drop-in replacement with equal or superior performance.
The 'R G2' stands for Rejection and Generation 2. This specific model is optimized for high salt rejection (99.8%) and fouling resistance. Other models like the 'ES L' are optimized for Energy Saving (lower pressure), while '440' models offer higher surface area (440 ft²) for more flow.