The Total-Rapid-Prep™ system performs complete sample preparation for six GC or GC/MS samples for analysis in a few hours. Solid or semi-solid sample is mixed with drying agent and placed in the extraction cells. The extraction cells are then filled with the solvent(s) of choice. They are pressurized & heated. While the samples are being extracted, the cleanup columns are conditioned. As soon as the extraction cycle is terminated, the extraction columns are depressurized, and flushed with solvent, and then purged with nitrogen. At the moment of the extraction columns depressurization the concentration cycle is started. Solvent exchange (if necessary) is performed for the concentrated sample, and the sample is then transferred to the cleanup columns for purification. As soon as the first fractions start to come off the clean up columns, the concentration cycle starts. The final concentrated fractions are then transferred for GC/MS analysis.