Chromogenic Chromocult Coliform Agar is a dehydrated medium for simultaneous detection, differentiation and enumeration of coliforms and Escherichia coli in water and microbiological quality control according to ISO 9308-1, EPA and AOAC methods.
Chromocult Coliform Agar, catalogue No. 110426, is a chromogenic and differential dehydrated culture medium supplied by MilliporeSigma / Merck. The medium is formulated for the simultaneous detection, enumeration and differentiation of coliform bacteria and Escherichia coli using chromogenic substrates that yield distinct colony colours. It is compliant with internationally recognized analytical methods such as ISO 9308-1, the U.S. Environmental Protection Agency (EPA) membrane filter method, and AOAC® validation protocols. Chromocult® Coliform Agar is intended for water microbiology, food and beverage testing, and general quality control workflows requiring reliable coliform detection.
Advantages
- Chromogenic formulation enables visual differentiation of coliforms and E. coli.
- Compliant with ISO 9308-1, EPA and AOAC® standards for coliform and *E. coli* enumeration.
- Granulated dehydrated medium ensures consistent preparation and performance.
- Suitable for water, food, beverage and environmental microbiology quality control.
- Supports growth of target bacteria with suppressed non-target flora.
- Provides results within approximately 24 hours when incubation conditions are met.
Technical specifications
| Product name | Chromocult® Coliform Agar |
| Catalogue number | 110426 |
| Brand | Chromocult® / MilliporeSigma |
| Form | Granulated dehydrated medium |
| Compliance standards | ISO 9308-1, EPA membrane filter method, AOAC® |
| Application | Simultaneous detection and enumeration of coliforms and E. coli |
| Technique | Chromogenic microbiological culture |
| Suitable for | Coliform bacteria; Escherichia coli |
| Typical use | Water quality testing, food and beverage microbiology |
| Prepared pH | 6.6–7.0 (at 25 °C, 26.5 g/L) |
| Solubility | 26.5 g/L in water |
| Storage conditions | 15–25 °C, dry |
| Brand | Merck |
| Pack size | 500 g |
