Based on the principle of the LM20E, the LM12E as well as the LM24E are designed to generate higher amounts of aerosol under reproducible conditions which can be collected or prepositioned for further experiments. In both cases the swiveling puffing bar allows vaping in various angles to the horizontal position. The individual ports can be equipped with aerosol detectors as well as with product activation units and the approved sample holders also. The complete sequence of the vaping process is coordinated by the control unit according to the master/slave principle. The operator is guided through the self-explanatory software and informed about the current status of the machine as comprehensively as possible. By Ethernet interface the machine can be linked to central computer systems for transfer of vaping plans and result tables.