PP3041 – Colorex Chromogenic O157 CT

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PP3041 – Colorex Chromogenic O157 CT

Colorex 0157 with Cafixime & Tellurite

This medium replaces the conventional Sorbitol MacConkey Agar that is reputed for high levels of false positives and the difficulty of colonial interpretation and differentiation. Colorex O157 is a chromogenic medium with a very high specificity (98% according to K.A. Bettelheim, 1998 J.Appl.Microbiol.85:425-428) for E.coli O157. To reduce the level of background flora, the medium is made selective by the addition of Cefixime and Potassium tellurite. Positive colonies exhibit a mauve colouration enabling easy interpretation amongst blue or colourless colonies of other bacteria.

SKU: PP3041 Categories: ,

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Product Description

Organisms Ref. No Result
Escherichia coli 0157 NCTC 12900 Growth / mauve colonies
Escherichia coli NCTC 12241 Inhibited

 

  PP3041 – Colorex O157 with Cafixime & Tellurite