Apparatus (included in this class), in particular for laboratory use, for dosing, pipetting, titrating, transferring, tempering, stirring, mixing, diluting, concentrating and separating of fluids, in particular manual, motorized and automatic pipettes, burettes, dispensers, bottle top dispensers, pipetting aids, dispensing aids, multi-purpose dosing instruments, tempering apparatus, stirring apparatus; apparatus (included in this class), in particular for laboratory use, for volumetric measurement, in particular volumetric cylinders, volumetric flasks, Erlenmeyer flasks, graduated pipettes; apparatus (included in this class), in particular for laboratory use, for sample-distribution, marking and identification; micro plates and their accessories, micro arrays, cuvettes; disposable articles for laboratory use (included in this class), in particular disposable cuvettes, sample storage containers, reaction containers, pipette tips, syringe-like parts for pipetting apparatus; auxiliary instruments for handling of liquids and solid materials (included in this class), in particular scoops, spatula, pincers, funnels, sampling containers of any kind, trays, carriers and holders for sample storing containers, tip boxes; valves, sliding valves, tubing connectors, plugs, and tubes for laboratory use (not of metal and no machine parts); containers, in particular for laboratory use, for handling, storing and preserving of liquids and solid materials, in particular bottles, wash bottles, canisters, sample containers, desiccators, boxes, cases, troughs, buckets, bowls, dishes, watch glasses; lids for aforementioned containers (included in this class)