2.5x21 / 2521 Commercial RO Membrane Replacement

SpiroPure commercial RO membranes in size 2.5x21 are your best choice for your smaller commercial RO systems and other reverse osmosis needs. 2521 membrane elements such as the brackish water BW-2521 RO membrane and the XLE-2521 / XLP 2521 extremely low pressure membrane help provide high performance treatment of TDS. Try SW-2521 seawater desalination membranes for high rejection of sodium for treatment of sea water and other high salinity applications. When you need low pressure, low energy membranes with high RO performance, the brackish water and extreme low pressure elements provide two different options for lower pressure requirements, for lower energy consumption and more energy savings.

Specifications

Membrane Type Model Rejection Rate Average Permeate ±15% Feedwater NaCl Fresh Water Recovery Rate Concentration of Salt Solution (Feedwater NaCl) Feed Spacer Maximum Recommended NaCl Maximum Operating Pressure
Commercial Membranes

2521 RO Membranes

Extremely Low Pressure 98.5%
  • 300 GPD @ 100 psi
500 ppm 8% 500 ppm 28 mm < 2,000 ppm 600 psi
Brackish Water 99.5%
  • 300 GPD @ 225 psi
2,000 ppm 8% 2,000 ppm 28 mm < 10,000 ppm 600 psi
Seawater Desalination 99.5%
  • 270 GPD @ 800 psi
32,000 ppm 4% 32,000 ppm 28 mm < 40,000 ppm 1,200 psi

Cross Reference Chart

Membrane Type SpiroPure Dupont / Filmtec GE / SUEZ Axeon LG Chen
Extremely Low Pressure SP-XL2521 XLE-2521 XE1-2521 LG BW 2521 UES
Brackish Water SP-BW2521 TW30-2521 LG BW 2521 R
Seawater Desalination SP-SW2521 SW30-2521 SE1-2521