Centrifuges used as laboratory apparatus; Chromatography columns for laboratory use; Disposable reusable dispenser syringes for laboratory use; Distillation columns for laboratory use; Glass driers for laboratory purposes; Glass drying tubes for laboratory use; Glass stirrers for laboratory use; Laboratory filters; Long neck funnels made of glass for laboratory use; Measuring pipettes of glass for laboratory use; Petri dishes used in laboratory research