E. coli organism

Sample Transport
Culture ☆ Result

Easy Identification

InTray® SMA - Prepared Plated Culture Media for E. coli O157:H7 InTray® SMA - Prepared Plated Culture Media for E. coli O157:H7
  • E. coli O157:H7 

InTray® SMA - Prepared Plated Culture Media for E. coli O157:H7

Sorbitol MacConkey Agar (SMA) is a selective and differential media for the detection of sorbitol-non-fermenting Escherichia coli serotype 0157:H7 associated with hemorrhagic colitis. This medium is also referred to as "MacConkey Sorbitol Agar."

E. coli serotype 0157:H7 is a human pathogen associated with hemorrhagic colitis that results from the action of a shiga-like toxin. On standard MacConkey Agar containing lactose,  this strain is indistinguishable from other lactose-fermenting E. coli. Field results show that the growth of E. coli 0157:H7 on SMA is heavy and occurs in almost pure culture-- as colorless sorbitol-non-fermenting colonies. Most organisms of the fecal flora ferment sorbitol and appear pink on this medium. SMA, therefore, permits ready recognition of E. coli 0157:H7 in stool cultures.


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
  • 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

100% specificity when used to isolate sorbitol-non-fermenting Escherichia coli serotype 0157:H7

Test Strain   ATCC#   Color
E. coli O157:H7   35150    Colorless
E. coli   25922   Pink to red w/ bile ppt.
E. faecalis   29212   Marked to complete inhibition
Time to Result
  • 18-24 hours - incubate 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.

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 SMA Custom Call for Pricing

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