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. Order online before 1 PM Central on a business day and it ships today.
Manufacturer Warranty
1PM CT
Ships same day from McAllen, TX
10% off
Automatic at 10+ units, no account
Order before 1 PM Central and it ships today.
Business days are Monday to Friday, excluding US federal holidays. Later orders ship the next business day. If we miss it, we upgrade your shipping at our cost.
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.
FLOWBW 400 R G2
Brackish Water
Reverse Osmosis Element
NanoH2O Co., Ltd. | 39 Baekbong-ro, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Korea | P: +82-2-3458-4320 | www.nanoh2owater.com
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+)
Free UPS Ground on 5+ (contiguous US) · 1 to 4 from $25
FLOWBW 400 ES L
Brackish Water
Reverse Osmosis Element
NanoH2O Co., Ltd. | 39 Baekbong-ro, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Korea | P: +82-2-3458-4320 | www.nanoh2owater.com
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+)
Free UPS Ground on 5+ (contiguous US) · 1 to 4 from $25
FLOWBW 440 R G2
Brackish Water
Reverse Osmosis Element
NanoH2O Co., Ltd. | 39 Baekbong-ro, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Korea | P: +82-2-3458-4320 | www.nanoh2owater.com
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+)
Free UPS Ground on 5+ (contiguous US) · 1 to 4 from $25
FLOWSW 400 R
Seawater
Reverse Osmosis Element
NanoH2O Co., Ltd. | 39 Baekbong-ro, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, Korea | P: +82-2-3458-4320 | www.nanoh2owater.com
SW 400 R
Desalination Grade
Seawater reverse osmosis membrane with 99.85% nominal salt rejection (factory datasheet) 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+)
Free UPS Ground on 5+ (contiguous US) · 1 to 4 from $25
Need 20+ Elements?
5+ units of a membrane save 5% and 10+ save 10%, automatically in your cart. Any 5+ elements, mixed models, ship free by UPS Ground to the contiguous US. 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.
In Stock in Texas. Ships the Same Day.
Genuine NanoH2O (formerly LG) elements, on our shelf now. Order before 1 PM Central on a business day and it ships that day. If it doesn't, we upgrade it to faster shipping at our cost.
Business days are Monday to Friday, excluding US federal holidays. Later orders ship the next business day.
Same-Day Action
Business-day orders before 1 PM Central ship the same day.
100% Genuine
Authorized NanoH2O (formerly LG) distributor.
Volume Capacity
Buying pallets? Volume pricing scales with your order.
A down RO train can't wait on a factory schedule.
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 PM Central on a business day 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.
Your Supplier Quoted Weeks? Sourcing 8040 Elements From Stock
How plant operators line up a second source with elements on the shelf.
Frequently Asked Questions
Orders of 5 or more elements (all models together) ship free by UPS Ground to the contiguous US (2 to 4 days). Alaska and Hawaii pay the live rate. For 1 to 4 elements, freight starts at $25 and the exact rate for your address is shown at checkout before you pay. Faster shipping is available; on 5+ you pay only the difference over Ground. All orders ship from our warehouse in McAllen, Texas. Online checkout ships within the US; for other countries, request a quote.
Yes, 100%. Enviro Membranes is an authorized NanoH2O (formerly LG Chem) distributor. NanoH2O's manufacturer warranty passes through to you, and we guide you through any claim.
Unopened membranes in original packaging may be returned within 30 days of delivery. A restocking fee of up to 15% may apply to non-defective returns. 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 up to 100 units per order 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.
Rather talk to a person? Call (956) 843-0090, weekdays 8 AM to 5 PM Central.