Premium RO Membranes withSame-Day Shipping
Genuine NanoH2O (formerly LG) reverse osmosis membranes, in stock and ready to ship. No minimum order: buy a single membrane online right now, or talk to us about a pallet. Either way, order before 1:00 PM CST and it ships today.
0+
Since Mar 2026
3hr
McAllen, TX → The Whole Continent
0
Same-Day, Every Order
Next Dispatch: Tomorrow Morning
Today's 1:00 PM CST shipping cutoff has passed. Order now to secure priority placement for tomorrow's first truck out of our Texas warehouse.
The Membranes.
Four industrial workhorses, all 8040 elements, all in stock. No minimum order, and volume pricing is published: 5+ saves 5%, 10+ saves 10%, applied automatically. No account, no sales call.
BW 400 R G2
Brackish Water RO Element · 8040 · 400 ft²
BW 400 R G2
The Industry Workhorse
High rejection brackish water RO membrane with 99.8% nominal salt rejection and advanced fouling resistance. The standard high-performance workhorse for industrial and commercial applications.
Flow
11,500 GPD
Rejection
99.8%
$603
as low as $543/unit (10+)
BW 400 ES L
Brackish Water RO Element · 8040 · 400 ft²
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
10,500 GPD
Rejection
99.6%
$573
as low as $516/unit (10+)
BW 440 R G2
Brackish Water RO Element · 8040 · 440 ft²
BW 440 R G2
Maximum Active Area
High-flow brackish water RO membrane featuring 440 ft² of active area for increased productivity and a reduced system footprint. More output per vessel.
Flow
12,650 GPD
Rejection
99.8%
$618
as low as $556/unit (10+)
SW 400 R
Seawater RO Element · 8040 · 400 ft²
SW 400 R
Desalination Grade
Seawater reverse osmosis membrane with industry-leading salt rejection (99.85%) for desalination applications. Built for the most demanding water treatment challenges.
Flow
9,000 GPD
Rejection
99.85%
$663
as low as $597/unit (10+)
Need 20+ Elements?
5+ units save 5% and 10+ save 10%, automatically in your cart, on any quantity. At 20+ a direct quote usually beats the automatic tier, freight included.
The Industry
Standard.
NanoH2O BW 400 R G2
Engineered for
Energy Savings.
NanoH2O BW 400 ES L
Maximum Output.
Minimal Footprint.
NanoH2O BW 440 R G2
Uncompromising
Desalination.
NanoH2O SW 400 R
Not sure which membrane fits? Ask.
Same-Day Shipping. Guaranteed.
We stock premium NanoH2O (LG) membranes and ship them faster than anyone else. No long lead times, no excuses.
Same-Day Action
Orders before 1:00 PM CST ship immediately.
100% Genuine
Authorized NanoH2O (formerly LG) Distributor Guarantee.
Volume Capacity
Buying pallets? Volume pricing scales with your order.
Most suppliers focus on middlemen and artificial scarcity.
We focus on Speed.
The Membrane Protocol.
Find Your Membrane
Browse the catalog, compare specs side by side, or ask Crystal Claire (AI) to verify compatibility and find exact replacements for what you run today.
Order in Minutes
Guest checkout with live shipping rates: no account, no minimum. Need a pallet? Request a volume quote and a human advisor prices it directly.
Same-Day Dispatch
Order before 1:00 PM CST and your membranes ship from our Texas warehouse the same day.
Latest Technical Insights
Research, comparisons, and supply chain strategies.
LG NanoH2O vs DuPont Filmtec BW30-400
An engineering analysis comparing TFN vs TFC technologies, operating pressures, and exact drop-in specifications.
The Logistics of Flux: Bypassing 3-Month Lead Times
Why 8-inch industrial RO membranes are backordered globally, and how plant operators are securing same-day transit inventory.
Frequently Asked Questions
Shipping cost is calculated at checkout based on your location. All orders ship from our warehouse in McAllen, Texas via UPS or FedEx Ground. Expedited shipping is available.
Yes, 100%. Enviro Membranes is an authorized NanoH2O (formerly LG Chem) distributor. Every membrane comes with full manufacturer specifications and warranty.
Unopened membranes in original packaging may be returned within 30 days of delivery. A 15% restocking fee applies. Contact us for a return authorization before shipping.
No. We offer guest checkout. Simply add items to your cart, enter your shipping address and payment info, and we handle the rest.
Yes, automatically. Order 5 to 9 units of a membrane and the cart takes 5% off; 10 or more takes 10% off. No code, no account, and you can buy any quantity online. For 20+ units the 10% still applies at checkout, but a direct volume quote (from any product page or Crystal Claire in the chat) will usually beat it, freight included.
Ready to Stop Waiting?
Your membranes are in stock in Texas right now. Order online in minutes, or talk to an expert first.