Dr. Michael Rapp is a researcher from Karlsruhe Institute of Technology in Germany and working on Surface Acoustic Wave (SAW) sensor based analytical systems for gas, olfaction and bio- sensing. To fulfill a proper job of these systems he continuously work on new sampling methods to improve the signals in term of sensitivity, selectivity, unwanted cross sensitivity and a good reproducibility. This includes the use of microfluidic sampling systems especially in the area of biosensing. A major goal of his work is to keep the manufacturing and also the operating costs of these systems low and, thus, being able to emerge in new markets.