


Softened nanofiltration membrane
FFM’s Nanofiltration membrane series for low-hardness water production achieves a hardness removal rate at exceeding 97% with excellent softening efficiency.
Specifically designed for less than moderate salinity water sources—including municipal tap water, groundwater, and surface water-this series efficiently removes divalent ions (primarily calcium and magnesium), organic compounds, and trace contaminants.
FFM’s Nanofiltration membrane series for low-hardness water production achieves a hardness removal rate at exceeding 97% with excellent softening efficiency.
Specifically designed for less than moderate salinity water sources—including municipal tap water, groundwater, and surface water-this series efficiently removes divalent ions (primarily calcium and magnesium), organic compounds, and trace contaminants.
| Model | effective membrane area ft² (m²) |
test pressure psi (bar) |
water production gpd (m3/d) |
Stable desalination rate MgSO4 (NaCL)% |
| FFM2521NL | 14(1.3) | 75 (5) | 400 (1.5) | 96 (30-50) |
| FFM2540NL | 30(2.8) | 75 (5) | 800 (3.0) | 96 (30-50) |
| FFM4021NL | 36(3.4) | 75 (5) | 1150 (4.3) | 96 (30-50) |
| FFM4040NL | 85(7.9) | 75 (5) | 2400 (9.1) | 97 (30-50) |
| FFM8040NL-375 | 375(34.9) | 75 (5) | 11000(41.6) | 97 (30-50) |
| FFM8040NL-400 | 400(37.2) | 75 (5) | 12000(45.4) | 97 (30-50) |
| FFM8040NL-440 | 440(38.1) | 75 (5) | 13000(49.3) | 97 (30-50) |
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FFM2521NL FFM2540NL FFM40210NL FFM4040NL FFM8040NL-375 FFM8040NL-400 FFM8040NL-440






