With this trace-gas analyzer gaseous substances can be detected and identified without any enrichment directly in situ already at a very low concentration level. The detection including sampling and identification process takes minutes seconds, depending on the possible GC-Setup. For the enhancement / enabling of the selectivity and further reduction of cross sensitivities, the IMS-Analyzer is also available as GC-IMS approach. There, the IMS is coupled with a gas chromatographic column (GC) for pre-separation. The GC-IMS version operates without external carrier gas which keeps the operation costs low. As for the enabling of selectivity in Photo-Ionisation, our PID detector is coupled with GC pre-separation as a standard. Calibration functions with an additional calibrator for SPAN/ZERO calibration are offered as well as Multi-Point-Sample (MPS) systems, dilution- or even gas probe systems.