The activity profile essentially comprises the application of defined quantities (spotting) of biological sample material to a predefined surface. The volume transferred per spot can range from a few pL to nL or even µL. The range of (biological) samples processed extends from nucleic acids (DNA, RNA and aptamers), peptides and proteins to complex samples such as serum, cell extract and vital cells. With the available equipment the physico-chemical properties of the samples can be taken into account and under identical conditions the samples can be dispensed very gently. Modified slides as well as membranes, wafers and pre-structured 3-dimensonal objects for ivD and lab-on-a-chip applications in different sizes can be used as targets for the samples. The offer is rounded off by the possibility of specific structuring and modification of surfaces and their characterization.