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Product Line: AQUAPORIN

The  Aquaporin  Inside®  HFFO2  module  is  designed  for  Forward  Osmosis (FO) applications.

Biomimetic  hollow  fiber  module  comprising  an  active  layer  of  polyamide  thin  film  composite  (TFC)  with  integrated  aquaporin proteins.  The  addition  of  aquaporin  water  channels  into  the  rejection layer makes the Aquaporin Inside® FO membrane capable of rejecting difficult contaminants and preserving valuable components. The use of hollow fibers allows for a very high packing density.





 mmm2                                 ft2LMHg/L
HFFO2.0.202.3                          24.711 ± 1.50.15 ± 0.05

The stated product performance is based on following testing conditions: 0.5 M NaCl (2.9 %) draw vs DI water (FO mode), temperature: 25 oC (77 oF), single pass mode, counter-current flow, feed flow rate: 60 LPH, draw flow rate: 25 LPH, transmembrane pressure (TMP) feed to draw: 0.2 bar (2.9 psi).



Operating mode Counter-current flow,
Transmembrane pressure (TMP)
feed to draw
0.2 bar / 2.9 psi
Temperature range 5-30 °C / 41-86 °F
pH range3-10
Pre-filtrationb≤ 50 μm


a. The optimal pre-filtration is application dependent.
b. Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty, Aquaporin A/S recommends removing residual free chlorine by pre-treatment prior to membrane exposure.
c. Refer to cleaning guidelines in the User Manual.



Transmembrane pressure (TMP) feed to draw≤ 4 bar / 58.0 psi
Feed inlet pressure≤ 4 bar / 58.0 psi
Draw inlet pressure≤ 4 bar / 29.0 psi
Max. particle size≤ 50 μm
Free chlorine tolerancec< 0.1 mg/L


Clean-in-place (CIP)d

Temperature≤ 50 °C / 122 °F
pH range2-11
Pressure ≤ 0.5 bar / 7.3 psi
Duration ≤ 20 min



  • Module can be operated in vertical and horizontal position.
  • It is recommended to rinse the module for 30 min, prior to first use.
  • It is advisable to pre-treat the feed solution to remove suspended solids. Particles might damage the fibers and possibly cause a decrease in performance.
  • Run feed solution prior to draw solution to avoid osmotic drying of the membrane.
  • Do not allow the module to run dry as this will compromise the membrane performance.
  • Immediately flush the module on feed side with clean water for ≥ 30 min after use (draw side connections open).  
  • The module can be stored at room temperature, but preferred storage is at 4 °C.
  • Keep out of direct sunlight.
  • To prevent biological growth during prolonged system shutdowns, the module should be immersed in a preservative solution. Rinse thoroughly before re-use.
  • Keep the module moist at all times after initial wetting.
  • The information provided in this document is for informative purposes only. It is the users own responsibility to ensure appropriate usage of this product. Aquaporin A/S assumes no obligation, liability or damages incurred for the misuse of the product or for the information provided in this document. This document does not express or imply any warranty as to the merchantability or fitness of the products.



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