The two pathogens can be distinguished from non-pathogenic enteric bacteria based on colony color, which is accomplished by three mechanisms like chromogenic reactions, carbohydrate fermentation, and hydrogen sulfide production.

HardyCHROM SS represents the chromogenic culture medium that simultaneously detects both Salmonella and Shigella spp. while ruling out non-pathogenic enteric bacteria (both lactose and non-lactose-fermenting organisms).

HardyCHROM SS provides superior differentiation of colonies, reduces the need for secondary testing of isolates, and thus results in less false-positive results.

HardyCHROM SS also allows the laboratory technologist to use fewer culture media plates when setting up stool cultures.

Hardy Diagnostics is a manufacturer of medical devices for microbiological procedures in both clinical and industrial laboratories.