Different microbiological testing applications have different target microorganisms; using a membrane filter that is both suitable for your target and of high quality is critical to success. Use this guide to determine the right membrane for your application.

Whether your lab runs a few microbiological tests a day, or into the hundreds, your selection of membrane filters and testing equipment can greatly affect efficiency, accuracy and the reliability of your results.

The membrane filter is central, but don’t forget the hardware! In high-throughput labs, for example, a sturdy membrane dispenser can save you time, and make your lab-life easier. Manifolds, funnels, even connectors — all can contribute to the smooth running of your microbiology lab.

What is your application? Typically used What products should you choose?
E. coli
Enterobacter sp.
Enterococcus sp.
Pseudomonas sp.
total aerobic microbial counts
0.45 µm; white
Additional options selected based on growth medium, colony color and organism size:
0.2 µm, black or green
ME25/21 (mce) 0.45 µm
ME24/21 (mce) 0.2 µm
Legionella sp. 0.45 µm black
0.2 µm pcte
ME 25/21 (mce) 0.45 µm
Polycarbonate track-etched 0.2 µm
Recreational water testing 0.45 µm white
0.45 µm pcte
0.45 µm white
0.45 µm pcte
Direct cell count / staining pcte membrane Polycarbonate track-etched
Beverage monitoring yeast and mold 0.45 µm white or black
Additional options selected based on growth medium, colony color and organism size:
0.8, 1.2 µm, green
ME (mce) membrane filters
Purified water system 0.2 µm , 0.45 µm white ME (mce Membrane Filters)
Hardware Based on workflow preferences eButler membrane dispenser
MBS I Microbiology System
Glass Filter Funnels
Stainless steel Funnels and Manifolds
Accessories tweezers
Suction flask
Witts flask
3-, 6-place standard manifolds
AS300, AS 600 vacuum manifold assemblies