On the basis of its good sensitivity and specificity, CAS medium can be recommended for use for primary plating when human stool samples are screened for Salmonella spp. C. albicans colonies are tiny and convex. Colonies plated out from stool specimens containing Salmonella sevorar Enteritidis.
Salmonella strains appear as mauve colonies.
Various blue colonies were identified as Escherichia coli and Citrobacter freundii , and unclored colonies were identified as Morganella morganii .