FILMTEC NF200-400

The FILMTEC™ NF200-400 nanofiltration element is a high area, high productivity element designed to remove a high percentage of TOC such as pesticides, herbicides, and THM precursors while having a medium to high salt passage; medium hardness passage.

The FILMTEC NF200-400 element is an ideal element for surface and ground water applications where good organic removal is desired with partial softening in order to maintain a minimum level of hardness for organoleptic properties and preservation of distribution networks.

The high active area membrane combined with low net driving pressure of the membrane allows the removal of these compounds at low operating pressure.

Product Name Nominal Active Surface Area
ft2 (m2)
FILMTEC NF200-400 400 (37)
1. Permeate Water Flow:
    Permeate Flow Rate, gpd(m3/d) CaCl2: 8000 (30.3)
    Permeate Flow Rate, gpd(m3/d), for MgSO4: 6800 (25.7)
2. Stabilized Salt Passage:
    Stabilized Salt Passage for CaCl2: 50 - 65%
    Stabilized Salt Passage for MgSO4: 3%
    Stabilized Salt Passage for Atrazine: 5%
3. Permeate flow rate and salt rejection based on the following test conditions:
    500 mg/l CaCl2, 70 psi (0.48 MPa), 77°F (25°C), and 15% recovery.
    2000 ppm MgSO4, 70 psi (0.48 MPa), 77°F (25°C), and 15% recovery.
4. Permeate flow rates for individual elements may vary +/-15%.
5. The above specifications are benchmark values. Please be sure to operate according to our system design guidelines.




These membranes may be subject to drinking water application restrictions in some countries: please check the application status before use and sale.


®™* Trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow
Related Links
Datasheet – English (112KB PDF)
Datasheet – 中文 (36KB PDF)