HardyCHROM O157, 15x100mm plate

HardyCHROM O157, 15x100mm plate, order by the package of 10

A selective and differential medium recommended for the isolation of enterohemorrhagic E.coli O157 from food, veterinary, and environmental sources. Chromogenic substances in the media facilitate detection by colony color. Not for human diagnostic use.

SUMMARY

Escherichia coli O157 is a pathogen responsible for outbreaks of serious food-borne disease. It has been established that cattle are the major reservoir for E. coli O157, with outbreaks of disease directly associated with the consumption of bovine food products. Traditional selective agars have been based on the ability of the organism to ferment either sorbitol or rhamnose, and the absence of beta-glucuronidase activity in order to isolate E. coli O157.

HardyCHROM™ O157 was developed as a media which is capable of differentiating E. coli O157 from non-E. coli O157 on the basis of colony color due to the presence of specific chromogenic substrates. These chromogens are specific biochemical compounds that produce a visible and qualitative color change when degraded by specific microbial enzymes. E. coli O157 produce purple-pink colored colonies on the plate. Organisms other than E. coli O157 will be inhibited, or appear as blue colonies.

HardyCHROM™ O157 provides an initial screen intended to isolate colonies for further testing. It is necessary to confirm isolated purple-pink colonies taken from HardyCHROM™ O157 with a latex agglutination test (Cat. no. PL070HD), antisera (Cat. no. 295798), or other test methods for a complete identification. Testing for the H7 antigen (Cat. no. PL079) or verotoxin testing may also be required.

• Hardy Diagnostics was the first company to introduce chromogenic prepared media to the United States in 1996. You can expect Hardy Diagnostics to be the leading innovator in chromogenic detection methods.
• We offer a handy bench-top flip chart to help you interpret the colors of all our chromogenic media. Please call us to receive your copy! (800) 266-2222. This media is to be stored and incubated in the dark. If you have a light in your refrigerator, incubator, or you leave the media exposed to light on the bench top, Hardy Diagnostics offers free Blok-Boxes. Blok-Box is a reusable cardboard box that holds one sleeve of ten petri plates.