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BS ISO 16649-2:2001
Microbiology of food and animal feeding stuffs. Horizontal method for the enumeration of $Gb-glucuronidase-positive Escherichia coli. Colony-count technique at 44$0DC using 5-bromo-4-chloro-3-indolyl-$Gb-D-glucuronide (British Standard)
This part of ISO 16649 specifies a horizontal method for the enumeration of β-glucuronidase-positive Escherichia coli in products intended for human consumption or for the feeding of animals. It uses a colony-count technique at 44 °C on a solid medium containing a chromogenic ingredient for detection of the enzyme β-glucuronidase.
British Standards Institution [bsi]