NanoH2O (LG) BW 400 ES L
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Technical Data Sheet

Official NanoH2O (LG) product specifications (PDF)

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 to 11.0

Cleaning pH

2.0 to 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

Freight from $25 (UPS Ground, 2–4 days) · exact rate shown at checkout

Volume pricing, applied automatically

1-4 units

$573

5-9 units

$544

10-19 units

$516

A typical 8-inch pressure vessel holds 6 to 7 elements, and operators usually replace a full vessel at a time. One vessel lands in the 5% tier; two vessels land in the 10% tier.

1
Replacing vessels?
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.