Pipetting systems; apparatuses and instruments for laboratory use for dispensing, transferring, temperating, stirring, mixing, diluting, concentrating and separating of liquid, namely, mechanic, electronic and automatic pipettes, multichannel pipettes, dispensers, pipetting and dispensing aids and multifunctional dispensers, sample-reagent -dispensers, apparatuses and instruments for heating and cooling of samples and reagents, lab consumables, namely plastic pipettes, sample supply beakers, vials, pipette tips, filter pipette tips, syringe-like parts for pipetting devices; cuvettes and burettes