International approvals include AOAC, IBWA, and EBWA.
Millions of tests performed worldwide every year.
Easy
Ease of use simplifies training.
Unit-dosed packaging eliminates media preparation.
No repeat testing due to clogged filters or heterotrophic interference.
Rapid
No confirmations needed.
No glassware cleaning or colony counting.
Accurate
Identifies E. coli specifically, eliminating unnecessary public notification due to non-target organisms.
Suppresses up to 2 million heterotrophs per 100 mL.
Eliminates the subjective interpretation found in traditional methods.
Detects a single viable coliform or E. coli per sample.
Economical
Minimizes evening and weekend work.
Up to 12-month shelf life at room temperature.
Flexible
Can be used for presence/absence (P/A) or quantification testing with Quanti-Tray and Quanti-Tray/2000.
The Colilert Test is also available predispensed in 10mL Most Probable Number (MPN) tubes.
Science
The Colilert Test uses proprietary Defined Substrate Technology (DST) to simultaneously detect total coliforms and E. coli. Two nutrient-indicators, ONPG and MUG, are the major sources of carbon in Colilert and can be metabolized by the coliform enzyme β-galactosidase and the E. coli enzyme β-glucuronidase, respectively.