Membrane
1. Characteristics
  • Sophisticated spinning technology for good permeability
  • The membrane material, Polysulfone has superior chemical resistance and chemical resistance.
  • Our filter can reject harmful suspended materials and bacteria and permeate healthful mineral.
2. Specification

ITEM

  • Membrane material
    Outside diameter
    Inside diameter
    Cut-off particle size*
    Permeability speed**
    Operation pressure***
    pH range

Specifications

  • Polysulfone
    500±20 μm
    320±15 μm
    0.03 μm
    50 l/min·m²
    0.5~4.0 kgf/cm²
    1~14

Conditions

  • 20 ℃, 1 kgf/cm²
    20 ℃, 1 kgf/cm², initial flux
    20~30 ℃

( *) Refer to 3.1 , (**) Refer to 3.2 , (***) Refer to 3.3.

3. Test method and result

3.1. Filter-out particles

    • Standard particle : Polystyrene latex bead(Sigma, mean dia.: 0.03, 0.05 μm)
    • Pressure : 1 kgf/cm²
    • Analysis : UV Spectrometer(λ=320 nm)
    • Influent : 100 ppm aqueous suspension
    • Effluent: 7.5 ppm for 0.03 μm (92.5 % rejected)
      -1.5 ppm for 0.05 μm (98.5 % rejected)
img_05

3.2. Permeability data

WATER TEMP(℃)Permeability[l/min·m²] per Pressure[kgf/cm²]
0.51.01.52.0

  • 10 19.14 36.93 56.76 72.82
  • 20 24.76 50.05 71.20 87.94

3.3. Bacteria removal test

    • Specimen : E. Coli, S. aureus
    • Water-in : 710 CFU/ml(E. Coli), 550 CFU/ml(S. aureus)
    • Analysis : UV Spectrometer(λ=320 nm)
    • water-out : Negative(0 CFU/ml, 100% rejected)
      - * Tested at Korea Testing & Research Institue (KOTRIC)
4. SEM Photographs

* The real effect to cut off 0.03㎛ latex beads 92.5% by the overlaying structure