Varian Saturn 3800 Gas Chromatograph and 2100 T Mass Spectrometer
This is actually two different analytical instruments hooked together. The gas chromatograph is used to separate organic molecules from one another, and the mass spectrometer is used as a detector to identify them. It is part of Dr. Melissa Lenczewski's organic geochemistry lab, and is used for the detection, or monitoring during clean-up, of such contaminants as pesticides, gasoline, and organic solvents.