E. coli serotype O157:H7

Sample Transport
Culture ☆ Result

Easy Identification

InTray® SMAE. coli serotype O157:H7 InTray


InTray® SMA

Product discontinued

InTray SMA (Sorbitol MacConkey Agar) is a selective and differential media for the detection of sorbitol-non-fermenting Escherichia coli serotype O157:H7 associated with hemorrhagic colitis. This medium is also referred to as “MacConkey Sorbitol Agar”. 

E. coli serotype O157: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 O157: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 O157:H7 in stool cultures.



Product Principle
  • Durable injection molded device
  • Highly selective media designed for growth, transport and result
  • Sealed environment with Tyvek® air filtration
  • Resealable media well reduces exposure and contamination
Simple Convenience
  • 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 Appearance

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

Incubate at 35 ± 2°C for 18-24 hours under ambient atmosphere.


ESBL Strains: K. pneumoniae & E. coli


InTray SMA has a shelf life of 12 months from the date of manufacture.

Upon receipt, store InTray SMA (Sorbitol MacConkey Agar) 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.

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

Key Features

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

You'll immediately experience a reduction in:

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

Ordering Information

Product Qty Item #
InTray SMA Custom Call for Pricing

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