Microbiology of food and animal feeding stuffs. Horizontal method for the enumeration of β-glucuronidase-positive Escherichia coli. Part 1. Colony-count technique at 44 °C using membranes and 5-bromo-4-chloro-3-indolyl β-D-glucuronide
Safety of household and similar electrical appliances. Particular requirements for electric shavers, hair clippers and similar appliances and test methods