RAPID'E.coli 2 Medium

RAPID'E.coli 2 Medium

Medium for the direct enumeration of Escherichia coli and coliforms without confirmation in 21±3 hr to results.

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Overview

RAPID'E.coli 2 Medium is a selective chromogenic agar used for direct enumeration, without confirmation, of colonies of Escherichia coli and other coliforms in food products.

Key Benefits

  • Simultaneous enumeration of E. coli and coliforms at 37°C
  • Specific enumeration of E. coli at 44°C
  • Results in 18–24 hr
  • No confirmation required
  • Certified NF VALIDATION according to the ISO 16140-2

Principle

The medium is based on the simultaneous detection of β-D-Glucuronidase (GLUC) and β-D-Galactosidase (GAL) activities. E. coli (GAL+/GLUC+) forms violet to pink colonies, while other coliforms (GAL+/GLUC-) form blue colonies. Detection of GLUC confers a high specificity to the method because E. coli is one of the few species of Enterobacteriaceae to possess this enzyme. Growth of interfering flora is inhibited, especially at 44°C, conferring high specificity to the medium.

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3554179

Pkg of 6, 225 ml bottles — for challenging and non-challenging enrichment conditions

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3564684

Pkg of 1, 500 g — for challenging and non-challenging enrichment conditions

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