Colilert-18 Water Test - Pack of 20

This product has currently got an expiry date of less than 12 months. Please contact the office before placing an order.

The Colilert-18 is a new standard in coliform/ E. coli detection

How it works:

  • Colilert-18 uses Defined Substrate Technology® (DST®) nutrient indicators ONPG and MUG to detect coliforms and E. coli.
  • Coliforms use their ß-galactosidase enzyme to metabolise ONPG and change it from colourless to yellow.
  • E.coli use ß-glucuronidase to metabolise MUG and create fluorescence.
  • The few non-coliforms that do have these enzymes are selectively suppressed by Colilert’s specifically formulated matrix.
  • Us-EPA approved


  • Training is simplified due to ease of use.
  • No repeat testing due to clogged filters or heterotrophic interference.
  • Quick Control (QC) procedures can be realised within 15 minutes.
  • Less than 1 minute hands-on time required.
  • Detection of coliforms and E.coli at once in 18 hours or less.
  • No conformations required.
  • No glassware cleaning or colony counting.
  • No more unneeded public notifications due to non-target organisms as E.coli is identified specifically.
  • The subject interpretation found in traditional methods is eliminated.
  • Detection of single viable coliform or E.coli per sample.
  • Up to 15 months shelf life at room temperature.

Also available: Colilert-18 Water Test (Pack of 200)