In comparision with other laboratory systems, e.g. Thermal Ionisation Mass Spectrometer (TIMS) and others, the Laser Ablation Time-of-Flight Mass Spectrometer instrumet designed in our group requires no sample preparation. No chemicals are used to disolve samples nor ovens to vaporise them. This circumstance plays a crucial role in the field of space instrumentation. An Oven for instance has a high power consumption but on spacecraft not a lot of power is in fact available. And how to store chemical solvents, other agents and gas bottles over a long time in spacecraft? This requires a lot of additional space and so weight which is also very limited in space missions.