Petri dish 5.5 cm.
Also known as: CCA
Intended use: Selective agar for the simultaneous detection of total coliforms and E. coli in water and food samples.
Typical formula (g/l)*: Enzymatic digest of casein 1.0; Yeast extract 2.0; Sodium chloride 5.0; Sodium dihydrogen phosphate 2.2; Disodium hydrogen phosphate 2.7; Sodium pyruvate 1.0; Tryptophan 1.0; Agar 12.5; Sorbitol 1.0; Tergitol 7 0.15; Salmon-beta-D-galactoside 0.2; X-beta-glucuronide 0.1; IPTG 0.1
Formula conform: ISO 9308
Interpretation: E. coli colonies are dark-blue to violet. Other coliforms are salmon to red. Other gramnegatives are colourless, except for some organisms which possess ß-D-glucuronidase activity. These colonies appear light-blue to turquoise. E. coli colonies can be confirmed with an indol test.
* Adjusted and/or supplemented as required to meet performance criteria.