Petri dishes; Chromatography apparatus for laboratory use; Laboratory centrifuges; Chemistry apparatus and instruments; Measuring glassware; Gas testing instruments; Air analysis apparatus; Test tubes; Workmen's protective face-shields; Droppers for measuring, other than for medical or household purposes; Food analysis apparatus; Incubators for bacteria culture; Biochips; DNA chips; Apparatus for laboratory use (other than medical); Furniture especially made for laboratories; Laboratory pipettes; Pipette tips; Teaching apparatus; Pipes for laboratory apparatus