Colilert®

Overview
Benefits
Science
FAQ
Document Library
Accessories

Coliform/E. coli Results in 24 Hours

IDEXX Colilert reagent is used around the world for the detection of coliforms and E.coli in water. Colilert, with its patented Defined Substrate Technology® (DST®), is used in over 90% of all US State labs. Colilert is, in fact, used more than all other methods combined (US, Canada and Japan drinking water markets).

Colilert is US EPA-approved and is included in Standard Methods for Examination of Water and Wastewater.
How to Use Colilert Video Windows Media (Windows Media™)
How to Use Quanti-Tray® Video Windows Media
How to Use Colilert®
 How to Use Quanti-Tray®/2000 Video Windows Media
Presence / Absence (P/A)

Step 1.
Add reagent to sample and incubate 24 hours.

Step 2.
Read results:
  • Colorless = negative
  • Yellow = total coliforms
  • Yellow/fluorescent = E. coli
Quantification
Step 1.
Add reagent to sample.

Step 2.
Pour into Quanti-Tray® (counts from 1-200) or Quanti-Tray®/2000 (counts from 1-2,419).

Step 3.
Seal in Quanti-Tray® Sealer and place in incubator for 24 hours.

Step 4.
Quanti-Tray-read results:
  • Yellow wells = total coliforms
  • Yellow/fluorescent wells = E. coli
Quanti-Tray/2000-read results:
  • Yellow wells = total coliforms
  • Yellow/fluorescent wells = E. coli

Back to top

This symbol indicates a Windows Media-formatted file. To view, you may need to download a free copy of the Windows Media™ player.