Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery. Safety and test methods. Part 2-6. Particular requirements for hand-held hammers and rotary hammers
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