Thermo Scientific Delta V mass spectrometer with a dual inlet and Conflo IV interface that is configured for compound-specific stable isotope analysis. The system includes a TRACE 1310 gas chromatrograph with TriPlus liquid injection autosampler coupled to a GC IsoLink II combustion interface capable of measuring δ13C, δ15N, and δ2H values in a variety of individual compounds including amino and fatty acids. This instrument is also equipped with a GasBench II that is primarily used for measuring δ13C and δ18O in carbonates and δ13C in CO2.