4" x 40" Seawater Desal Reverse Osmosis Membrane

SKU SW-4040

$477.56 Regular price $513.50 SKU SW-4040

Save $35.94 compared with one-time purchase

The Crystal Quest Desal Reverse Osmosis Membrane/Seawater Membrane will separate dissolved salts and other minerals from your water.

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Shipping

Free shipping on orders over $150

Residential addresses in the lower 48 US states. Excludes business addresses, commercial and industrial systems (which ship by freight), and filter media sold by the bag or cubic foot.

Shipping for this item is calculated at checkout.

Order by 3:00 PM Eastern on a business day and most filters, cartridges and smaller items leave our facility that same day. Standard residential systems ship within 1 to 2 business days, and whole house, custom and specialty systems typically within 3. So far in 2026, 95% of our orders have shipped within one business day and 99% within five (based on an internal review of our order records).

Once shipped, standard delivery typically arrives in 3 days to the Southeast, Northeast and Southwest, and in 4 days to the Midwest and the West. Need it sooner? UPS 2nd Day Air and Next Day Air are available at checkout for eligible products. Systems that ship by freight can take longer and may need a delivery appointment.

Lifetime support

Our team answers questions about products, orders, installation, troubleshooting and replacement parts.

Phone: 770-951-5600 or (800) 934-0051

Email: help@crystalquest.com. We reply within 24 to 36 hours.

Live chat during business hours

Hours: Monday to Friday, 9:00 AM to 5:00 PM Eastern. We observe U.S. federal holidays.

4" x 40" Seawater Desal Reverse Osmosis Membrane

Description

The Crystal Quest Desal Reverse Osmosis Membrane/Seawater Membrane will separate dissolved salts and other minerals from your water. Feed-water sources may include brackish, seawater, wells, surface (rivers and streams), wastewater, and industrial feed and process waters. Seawater requires pre-treatment to remove various contaminants such as organics, algae, and fine particles.

The Crystal Quest Desal/Seawater RO Membranes will reduce barium, cadmium, chromium III & VI, copper, fluoride, lead, mercury, nitrate, nitrite, radium, selenium, and TDS. Desal Reverse Osmosis Membranes improve the flavor of hot and cold beverages including coffee, tea, and juices.

Crystal Quest Low Energy Freshwater Reverse Osmosis Membrane for Commercial, Industrial and Residential