The possibility to apply diffusiophoresis and the Stefan flow effects in a new type of sampler was investigated. The advantages of the later are significant compared with other sampler desingns, since it gives representative samples that can subsequently analysed by the methods of optic and electron microscopy. The low particle deposition velocity keeps microorganisms intact, on the other hand, the small depence of the particles' deposition velocity upon their sizes makes the separation of the analyzed aerobiological objects impossible. As a result, the representativness of samples is secured. In this paper the sampler design is described and its working conditions (heat, hydrodynamic) are analyzed.