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Microfiltration Technology
for Laboratory and Process Systems

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Specifications: Nitrocellulose/MCE Membrane

Pore Size (m m) Bubble Point1 Flow Rate2 Porosity (%)3 Thickness (m m) Weight (mg/cm2) Density (g/cm3) Minimum Burst Pressure4
kg/cm2 PSI Water Air
5.0 WP 0.75 11 400 40.9 84 160 4.2 0.26 >0.45
3.0 WP 0.90 13 300 28.3 83 155 4.4 0.28 >0.50
1.2 WP 1.15 16 220 20.4 83 150 4.4 0.29 >0.60
0.8 WP 1.35 19 165 15.0 81 150 4.6 0.31 >0.65
0.8 WG 1.10 16 145 13.9 78 135 4.9 0.36 >0.50
0.65 WP 1.70 24 120 11.2 81 150 4.8 0.32 >0.70
0.65 WG 1.30 18.5 100 10.2 76 135 5.0 0.36 >0.60
0.45 WP 2.80 40 45 5.0 78 145 5.2 0.36 >1.10
0.45 WG 1.85 26 57 5.8 77 133 5.2 0.39 >0.80
0.3 WP 3.30 47 30 3.7 77 140 5.3 0.38 >0.70
0.2 WP 4.30 61 17.5 2.4 75 133 5.5 0.41 >1.10
0.1 WP 3.10 44 2.9 0.67 66 120 6.3 0.56 >1.60

(WP - white plain, WG - white grid)

  • Wetting time: < 3 seconds to wet a 47 mm diameter disc with aqueous 1% methylene blue
  • Rf (refractive index) = 1.515
  • Maximum operating temperature = 130° C
   DEFINITIONS:
  1. Bubble point is the minimum pressure required to force air through a membrane which has been prewet with water (0.1 µm membranes prewet with isopropanol)
  2. Flow Rate indicates initial flow rate at 10 PSI using a KGS 47 filter holder
        Water: using water prefiltered to 0.1 µm pore size
        Air: using prefiltered nitrogen at 10 psi
  3. Porosity refers to the percent open area
  4. Burst pressure is the minimum pressure required to rupture exactly 1 cm2 area of dry unsupported membrane
   

Ash Content of White Plain Nitrocellulose Membrane Filters (ppm)

Al <0.002* K 1.71 Ni 0.24
Ca 45.5 Li 0.11 Pb -
Cd - Mg 8.98 Si <0.002*
Cr 1.67 Mn <0.002* Sn <0.002*
Cu 0.82 Mo <0.002* Ti <0.002*
Fe 1.6 Na 3.92 Zn 0.69

* limit of detection method

Chemical Compatibility

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