E. coli organism

Sample Transport
Culture ☆ Chromogenic Result

InTray® COLOREX™ O157 - Prepared Plated Culture MediaBiomed InTray O157 culture media for E. coli O157 diagnostics


InTray® COLOREX™ O157 - Prepared Plated Culture Media

COLOREX O157 is designed for simultaneous growth, observation and chromogenic differentiation of E. coli O157 from clinical or food specimens. This device makes preliminary detection easy by producing distinctive color differences between the growth ofE. coli O157 as well as other organisms within as little as 18-24 hours – all while inhibiting the growth of mold, fungi, and other bacteria.


Product Principle
  • Combine collection, culture, result and microscopic observation in one IVD device.  
  • Highly selective prepared media in a device designed for in-vitro specimen transport and incubation.
  • Rapid presumptive-positive diagnosis without re-plating.  Intray can be placed directly on microscope stage
  • Fully enclosed cassette with Tyvek® air filtration prevents contamination and exposure, post-collection.   
Simple Convenience
  • The InTray is designed for specimen collection/ inoculation at point-of-care
  • Saves time, material cost and waste, reducing exposure to collected sample
  • Place directly on the microscope tray for observation through the cassette’s clear anti-fog window
  • Selectively produces distinctive colony growth with typical identifiable morphology
Accurate Detection

Test Strain


Colony Appearane

E. coli O157 35150 Mauve
E. coli 25922 Metallic blue
K. pneumonia 13883 Metallic Blue
E. faecalis 29212 Inhibited
Time to Result

Incubate 18-24 hours at 37ºC.

  • Extended 12 month shelf life (2-8°C) from the date of manufacture
  • Can tolerate extended periods at controlled room temp (≤ 25˚C), with no loss in performance.
  • Food sample
  • Environmental sample

Not for human diagnostic use.

A latex confirmation test for O157 is suggested for suspect colonies. Definite identification requires, in addition to characterization of O157 serotype, a final identification as E. coli.

Features and Benefits

Shelf-life and durability

  • Designed for long shelf life, durability and stackable for incubation, or 12 month storage. 
  • No re-plate or wet mount 
  • Once InTray is inoculated, no other culture preparation is required... saving time and cost. 
  • Designed for specimen collection/inoculation at point-of-care, a fully enclosed system for transport, incubation, result and microscopic observation. 
  • The sealed prepared media device is selectively formulated for accurate detection and identification of pathogens and non-pathogens
  • Visual chromogenic differentiation and/or selective production of distinctive colony growth with typical identifiable morphology 

Key Features

  • Fully enclosed cassette with air filtration system
  • Nutritive culture colony growth medium, formulated for selectivity and specificity 
  • Anaerobic or aerobic system available 

You'll immediately experience a reduction in:

  • Time-to-result
  • Cost of laboratory materials 
  • Medical waste
  • Risk of exposure or contamination

Instructions for Use

Biomed offers extensive product documentation for each of our products. If you would like to review these, please see the Product Documentation section in the upper right of this page. 

If you would like to download the Instructions for Use (IFU) please click here ►

Ordering Information

Product Qty Item #
InTray COLOREX O157 Custom Call for Pricing

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