Sorbitol MacConkey

This is a differential medium for the isolation of Escherichia coli 0157:H7. It differs from other MacConkey media in that lactose has been replaced by sorbitol. As Escherichia coli 0157:H7 does not ferment sorbitol, it produces pale translucent colonies whereas most other strains of Escherichia coli do ferment sorbitol and produce pink colonies.

Additional Information


Pack Size

Shelf Life (days)

Storage Temp (°C)




Fill Volume

Product Description

Organisms Ref. No Result
Escherichia coli NCTC 12241 / WDCM 00013 Pink colonies
Escherichia coli 0157 NCTC 12900 / WDCM 00014 Pale translucent colonies
Staphylococcus aureus NCTC 12981 / WDCM 00034 Inhibited


Recommended Incubation: Incubate aerobically at 37 ± 1°C for 16-24 hours.