BS ISO 16649-2:2001
Microbiology of food and animal feeding stuffs. Horizontal method for the enumeration of β-glucuronidase-positive Escherichia coli. Colony-count technique at 44°C using 5-bromo-4-chloro-3-indolyl-β-D-glucuronide

https://doi.org/10.3403/02391127 (published 23/10/2001)