E. coli organism

Sample Transport ☆ Culture ☆ Chromogenic Result

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

InTray® COLOREX™ Screen

InTray COLOREX Screen is for rapid isolation and differentiation of urinary tract pathogens. Suitable for direct plating of urine specimens. 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 more information regarding InTrays with antibiotic supplementals, please see COLOREX ESBL and COLOREX KPC.


Product Principal
  • 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

Sensitivity of 99.3% for E. coli [1]



Colony Appearance

E. coli   Dark pink to reddish
Enterococcus   Turquoise blue
Klebsiella   Metallic blue
Enterbacter   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

Shelf-life and durability

  • Manufactured for extended 12-month shelf life. 
  • Durable and stackable for incubation
  • No re-plate or wet mount 
  • Once inoculated, no other culture preparation is required... saving time and money. 
  • Designed for specimen collection/inoculation at point-of-care, InTray is 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 (on select products)
  • Biomed uses CHROMagar™ Orientation for chromogenic differentiation in our proprietary InTray culture media device under the name InTray COLOREX™.

You'll immediately experience a reduction in:

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

Articles and Whitepapers


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

Ordering Information