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Sartorius 11803--50------N PTFE (Polytetrafluorethylene) Membrane Filters

In stock
Filter air and gasses, even at low differential pressures. Sartorius™ PTFE (Polytetrafluorethylene) Membrane Filters are permanently hydrophobic with low adsorption and excellent chemical compatibility. Choose from four pore sizes in a variety of diameters.


Constructed of pure PTFE to be permanently hydrophobic
  • Not wetted by air humidity to allow unhindered passage of air
  • Excellent chemical compatibility (pH 1 to 14) and low adsorption (Gamma Globulin 8µg/cm²
  • Lab applications:
    • The main application is air/gas filtration, even at low differential pressures
    • Also ideal for filtration of solvents and acids to which other filter types are not resistant
      (Must be prewetted with ethanol or methanol before filtration of aqueous media)
  • A variety of non-sterile, white membranes without grids:
    • 0.2µm, 0.45µm, 1.2µm and 5.0µm pore sizes
    • 13, 25, 37, 47, 50, 90 and 100mm diameters
  • Can be sterilized by autoclaving at 121° or 134°C or with ethylene oxide
  • Bulk packed in boxes of 100 (boxes of 25 for the 90 or 100mm filters)

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More Information
Lead Time20
Manufacturer Part Number11803--50------N
MaterialPolytetrafluoroethylene (PTFE)
Pore Size1.2μm
Quantity per Pack100/pk.
Diameter (mm)50mm
Bubble Point0.45bar
Liquid Flow Rate80mL/min. (Isopropanol)
For Use With (Application)Air/gas-filtration

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