Description
Class G01N : INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Subclass 1/20: Sampling; Preparing specimens for investigation (handling materials for automatic analysis G01N 35/00) Devices for withdrawing samples (for medical or veterinary purposes A61; obtaining samples of soil or well fluids E21B 49/00) in the liquid or fluent state for flowing or falling materials (G01N 1/12, G01N 1/14 take precedence)