The Colilert test simultaneously detects or quantifies both total coliforms and Escherichia coli, with results in 24 hours. Application:
1. Drinking water
2. Source water
3. Waste water
4. Food water
5. Medical water
6. Livestock water
7. Bottled water
8. Reclaimed water 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. About Colilert test:
Colilert test 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.
U.S. EPA approved and included in Standard Methods for Examination of Water and Wastewater.
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.
As coliforms grow in the Colilert Test, they use β-galactosidase to metabolize ONPG and change it from colorless to yellow.