Neogen® offers a wide array of water microbiology diagnostic tests. From powdered enzyme / substrate tests to membrane filtration with ampouled media to dehydrated culture media, Neogen’s line of water micro testing products is the broadest in the industry.

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Powdered Enzyme Substrate Test

Colitag™ – the EPA approved, easy to use test for coliforms and E. coli in water featuring the widest read window available.

Colitag is a presence-absence (P-A) and Most Probable Number (MPN) enzyme substrate test that features a 16 - 48 hour read window for total coliform and E. coli determination.

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Membrane Filtration and Ampouled Media

Membrane Filtration and Ampouled Media

Neogen offers a disposable membrane filtration system that utilizes 2 mL ampouled media to enumerate and etect a wide variety of microorganisms in liquid samples.

Neogen filters featuers:

  • Sterile, ready-to-use
  • Converts to a petri dish
  • Available in black or or white filters
  • High-contrast grid lines
  • 56 mm in diameter
  • .45 micron pore size



Neogen Culture Media

Culture Media

Our line of Culture Media products have been designed to support the testing needs of the water industry.

If you would like to know more about the Neogen Culture Media transition please visit our Culture Media page.