8040 LG RO membrane Model: BW 400 R

1. What is the LG BW 400 R used for?

It's a brackish water RO membrane built for industrial and commercial water treatment requiring high water flow and superior salt rejection at plant scale.

2. What size is this membrane?

Standard 8040 format — 8-inch diameter, with 400 sq. ft. of membrane area.

3. What is the salt rejection rate?

Up to 99.5%.

4. How is the "R" different from the "ES," "AFR," and "R DURA" variants?

All share the same base membrane area but are tuned differently: R prioritizes maximum rejection, ES prioritizes energy savings, AFR is built for fouling-prone feed water, and R DURA is enhanced for longer service life under demanding conditions. See the comparison table above.

5. How is this different from the smaller BW 4040 R?

Both are "High Rejection" variants sharing the same membrane chemistry, but the 400 R is the larger 8040 format built for plant-scale, higher-volume systems, while the 4040 R suits smaller or mid-scale installations.

6. Is this membrane suitable for seawater?

No — this is a brackish water membrane. For seawater desalination, see LG's SW 400 R model instead.

7. Do you offer bulk pricing for multi-element orders?

Yes — Pearl Water offers tiered discounts (3% off buying 2, 4% off buying 3, 5% off buying 4 or more), relevant for multi-vessel industrial arrays.