SANTA MARIA, Calif., Feb. 14, 2011 /PRNewswire/ -- Hardy Diagnostics, an ISO certified biomedical firm, is pleased to announce the release of HardyCHROM™ SS, a highly selective chromogenic medium recommended for use as a primary screening medium for the isolation and differentiation of Salmonella and Shigella spp. from stool cultures. These two pathogens can be easily distinguished from non-pathogenic enteric bacteria based on colony color. Differentiation of Salmonella and Shigella spp. from non-pathogenic bacteria is accomplished by three mechanisms: chromogenic reactions, carbohydrate fermentation, and hydrogen sulfide production. Shigella and non-H2S producing Salmonella spp. appear as turquoise colonies. H2S producing Salmonella will develop colonies with black centers.
HardyCHROM™ SS represents the first and only 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). Most Proteus spp. do not produce black colonies (H2S) and do not produce a color change on this medium; and therefore are not confused with Salmonella and Shigella.
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.
ABOUT HARDY DIAGNOSTICSHardy Diagnostics is an FDA licensed and ISO 13485 certified manufacturer of medical devices for microbiological procedures in both clinical and industrial laboratories. The company manufactures over 3,000 products for the cult
|SOURCE Hardy Diagnostics|
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