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(028) 6258 5368LG BW 400 R
The LG BW 400 R RO membrane from LG Chem is designed to achieve up to 99.6% salt rejection while providing a permeate flow rate of 10,500 GPD (39.7 m³/day). Utilizing Thin-Film Nanocomposite (TFN) technology, this membrane optimizes filtration efficiency and reduces energy consumption. Its 34-mil feed spacer minimizes fouling, lowers pressure drop, and extends membrane lifespan, making it suitable for large-scale water treatment systems.
Product Features
- Thin-Film Nanocomposite (TFN) technology enhances water treatment efficiency and fouling resistance.
- High salt rejection of up to 99.6%, ensuring superior water quality.
- Optimized design prolongs membrane lifespan, reduces operational costs, and lowers CIP cleaning frequency.
- 34-mil feed spacer reduces pressure drop, minimizes fouling, and improves filtration efficiency.
- Exceptional durability ensures stable long-term operation.
- Certified to NSF/ANSI 61 standards for drinking water system components.
Technical specifications
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Permeate flow rate
10,500 GPD (39,7 m3/day)
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Stabilized salt rejection
99.6%
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Minimum salt rejection
99.5%
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Maximum applied pressure
600 psi (41.3 bar)
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Active membrane area
400 ft2 (37 m2)
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Feed spacer thickness
34 mil
The LG BW 400 R RO membrane delivers stable performance, high salt rejection, and optimized system operation. With an advanced 34-mil feed spacer design, it minimizes pressure drop and reduces fouling, making it ideal for various industrial and municipal water treatment applications.
Below are key details to help customers accurately assess the performance and suitability of this membrane for their water treatment systems.
1. Technical specifications of the LG BW 400 R RO membrane
Understanding the technical specifications helps customers evaluate the membrane’s efficiency and durability. The LG BW 400 R is designed to deliver high permeate flow with stable salt rejection while minimizing pressure loss.
SPECIFICATION | VALUE |
---|---|
Permeate flow rate | 10,500 GPD (39,7 m3/day) |
Stabilized salt rejection | 99.6% |
Minimum salt rejection | 99.5% |
Active membrane area | 400 ft2 (37 m2) |
Feed spacer thickness | 34 mil |
2. Operating Specifications of the LG BW 400 R membrane
To achieve the best performance and extend the membrane’s lifespan, customers should follow the operating specifications of the LG BW 400 R industrial RO membrane as listed below:
SPECIFICATION | VALUE |
---|---|
Maximum applied pressure | 600 psi (41.3 bar) |
Maximum chlorine concentration | < 0.1 ppm |
Maximum operating temperature | 45°C (113°F) |
pH range, continuous operation | 2 – 11 |
pH range, cleaning | 2 – 12 |
Maximum feed water SDI15 | 5.0 |
Maximum feed water turbidity | 1.0 NTU |
Maximum feed flow | 75 gpm (17 m3/h) |
Maximum pressure drop (ΔP) for each element | 15 psi (1.0 bar) |
3. Key features of the LG BW 400 R RO membrane
The LG BW 400 R membrane offers durability and high efficiency with the following features:
- Advanced Thin-Film Nanocomposite technology enhances filtration performance and fouling resistance.
- 34-mil feed spacer minimizes pressure drop, reduces fouling, and optimizes cleaning intervals.
- High salt rejection of 99.6% ensures superior permeate water quality.

4. Advantages of the LG BW 400 R RO membrane
Designed for operational cost savings and consistent water quality, the LG BW 400 R provides key advantages:
- Optimized permeate water quality, meeting high standards for industrial applications.
- Reduced fouling, extending membrane lifespan and reducing cleaning frequency.
- Exceptional durability, ensuring stable operation in large-scale RO systems.
- Certified to NSF/ANSI 61, meeting international safety standards for drinking water applications.
5. Certifications of the LG BW 400 R RO membrane
The LG BW 400 R is certified to NSF/ANSI 61, ensuring compliance with international safety and quality standards for drinking water treatment components. View certification details.
6. Applications of the LG BW 400 R RO membrane
With its advanced technology, the LG BW 400 R meets the demands of various industrial and municipal water treatment applications. Its high salt rejection effectively removes impurities, significantly improving water quality. Common applications include:
- Industrial water treatment: Supplying high-purity water for manufacturing.
- Wastewater reuse: Reducing environmental impact and conserving resources.

7. Authorized distributor of LG BW 400 R membranes
Purchasing RO membranes from a trusted supplier ensures product quality and optimal system performance. ATS Water Technology Co., Ltd. is the official distributor of LG BW 400 R RO membranes from LG Chem, offering genuine products with full international certifications.
At ATS Water Technology, we provide not only high-quality products but also expert technical support to help customers choose the most suitable solutions. Contact us today for free consultation and access to the best water treatment solutions!

ATS WATER TECHNOLOGY CO., LTD
- Headquarter: 54/18 Bui Quang La, Ward 12, Go Vap District, HCMC
- Branch office: 77 DHT10B, Dong Hung Thuan Ward, District 12, HCMC
- Consultation and support: (028) 6258 5368 – (028) 6291 9568
- Email: info@atswatertechnology.com
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