The SpiroPure SP-BW2521 is a 2.5" x 21" brackish water commercial reverse osmosis (RO) membrane designed for compatible water treatment systems handling elevated dissolved solids. Please confirm size and specification compatibility before purchase.
It provides a 99.5% salt rejection rate and an average permeate flow of 300 GPD (±15%) at 225 PSI under specified test conditions.
The SP-BW2521 is a compatible replacement for select DuPont FilmTec TW30-2521 and LG Chem LG BW 2521 R membrane applications. Certified to NSF/ANSI/CAN 61, it offers a practical replacement option for compatible commercial brackish water RO systems.
Brackish Water 2521 RO Membrane Specifications:
- Nominal Size: 2.5" x 21"
- Certification: NSF/ANSI/CAN 61 Certified
- Salt Rejection Rate: 99.5%
- Average Permeate ±15%: 300 GPD @ 225 PSI
- Feedwater NaCl Test Concentration: 2,000 ppm
- Test Recovery: 8%
- Feed Spacer: 28 mil
- Maximum Recommended NaCl: <10,000 ppm
- Maximum Operating Pressure 600 PSI
BW-2521 Low Pressure Brackish Water Membranes common applications:
- Brackish water treatment
- Commercial water treatment systems
- Food service
- Medical and research institutions
- Hospitality industry
- Wastewater reuse applications
- Drinking water
- Chemical processing
- Electronic industries
- Process water
SP-BW2521 Compatible Replacement Models:
- Dupont Filmtec TW30-2521
- LG Chem LG BW 2521 R
FAQs on 2521 Commercial RO Membrane
What is a 2521 brackish RO membrane used for?
A 2521 brackish RO membrane treats water with elevated dissolved solids, such as well water or moderately saline municipal sources. The SpiroPure SP-BW2521 is built for small commercial applications requiring reliable performance and consistent water production from brackish feed water.
What is the size of the SpiroPure SP-BW2521 membrane?
The SpiroPure SP-BW2521 brackish RO membrane measures 2.5" x 21" matching standard commercial pressure vessel dimensions. Use cross-reference charts to find compatible membranes.
What is the salt rejection rate of the SP-BW2521 RO membrane?
The SP-BW2521 has a stabilized salt rejection rate of 99.5%, tested at 225 PSI against 2,000 ppm feedwater NaCl. It's rated for feedwater below 10,000 ppm NaCl maximum, well within typical brackish water conditions.
How much water can the SP-BW2521 produce?
The SpiroPure SP-BW2521 produces an average permeate flow rate of 300 GPD (±15%) at 225 PSI operating pressure, with a fresh water recovery rate of 8%. Actual output depends on your system's real feed water conditions and temperature.
Can this 2521 RO membrane be used for seawater?
No. The SP-BW2521 is rated for brackish water below 10,000 ppm NaCl, well below seawater's typical 32,000+ ppm salinity. For seawater desalination and other high TDS industrial water filtration, choose the SpiroPure SP-SW2521, engineered specifically for high-salinity, high-pressure applications.
Which membranes can the SpiroPure SP-BW2521 replace?
The SpiroPure SP-BW2521 offers a compatible replacement option for select DuPont FilmTec TW30-2521 and LG Chem LG BW 2521 R membrane applications. Its published specifications include a nominal 2.5" x 21" size, 99.5% salt rejection rate, and an average permeate flow of 300 GPD (±15%) at 225 PSI. Compare these specifications with your RO system requirements when selecting a replacement membrane.
