E. coli organism

Sample Transport ☆ Culture ☆ Chromogenic Result

InTray® VS COLOREX™ ScreenBiomed InTray Colorex Screen culture media for diagnostics

InTray® VS COLOREX™ Screen

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For Rapid Isolation and Differentiation of Urinary Tract Pathogens

The major target of this medium is the detection of urinary tract pathogens, but COLOREX Screen has a broader application as a general nutrient agar for the isolation of various microorganisms.

COLOREX Screen can also be used to differentiate various microorganisms in other infected areas; e.g., scars, wounds, etc. In addition, COLOREX Screen is useful when supplemented with various antibiotics in detecting increasingly important nosocomial and multidrug resistant microorganisms.

For InTrays with antibiotic supplementals, please see COLOREX ESBLCOLOREX KPC, and COLOREX Yeast



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
  • InTray is designed for specimen collection and 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
  • Visual chromogenic differentiation
Accurate Detection
Colony Appearance
E. coli
Dark pink to reddish
Enterococcus   Turquoise blue
Klebsiella   Metallic blue
Enterobacter   Metallic blue
Citrobacter   Metallic blue
Proteus   Brown halo
Pseudomonas   Cream, translucent
S. aureus   Golden, small, opaque
S. saprophyticus   Pink, small, opaque
Time to Result

Incubate at 37°C for 24-72 hours under ambient atmosphere. Note any colony color and morphology


COLOREX Screen expires 12 months from the date of manufacture.

Upon receipt, store COLOREX Screen under refrigeration (2-8°C). Medium can be kept for one day at ambient temperature. Avoid freezing or prolonged storage at temperatures above 40°C. Do not open until ready to use. Do not use if the medium shows signs of deterioration or contamination.


Urine   |   Pus   |   Stool   |   Scar tissue

Features and Benefits

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Articles and Whitepapers

Practical Bench Comparison of BBL CHROMagar Orientation and Standard Two-Plate Media for Urine Culture
John Merlino, Steven Siarakas, Graham Robertson, Glenn Funnell, Thomas Gottlieb, and Ross Bradbury

J Clin Microbiol; 34.

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Evaluation of Use of a New Chromogenic Agar in Detection of Urinary Tract Pathogens
Z. Samra,M. Heifetz, J. Talmore, E. Bain, and J. Bahar

JOCM Vol 36, No 4

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Evaluation of CHROMagar Orientation for Differentiation and Presumptive Identification of Gram-Negative Bacilli and Enterococcus Species
Z. Samra,M. Heifetz, J. Talmore, E. Bain, and J. Bahar

J Clin Microbiol; 34.

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A Study on Evaluation of Different Culture Media for the Isolation of Routine Urinary Pathogens
Biji, S. Manjusree, O. Sasikumari and J.T. Ramani Bai/h6>

IJCM Vol 6 No 2

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Product Qty Item #
InTray COLOREX Screen 20 pack 11-103-002

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