Whatman® ME membranes for microbiological control

ME25/Select 21 ST membrane circles white, diam. 50 mm, pore size 0.45 μm, black grid, sterile, pkg of 100 ea

track etched membrane, osmotic membrane, water membranes, Z759600




pkg of 100 ea


Whatman 10406800
Whatman Article No. 29014373 (US reference)


50 mm

membrane diam.

47 mm


black grid

pore size

0.45 μm

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General description

These membranes are used to quantitatively evaluate microorganism counts. The liquid is filtered through a membrane and microorganisms collect on the membrane surface. The filter is incubated on a nutrient medium and the individual colonies can then be evaluated. The method is also suitable for large sample volumes and low microorganism counts.

  • Mixed cellulose ester membrane
  • Economical
  • Specifically for aqueous solutions
  • Hydrophilic
  • For use up to 125ºC

Legal Information

Whatman is a registered trademark of Cytiva

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