Thermo Delta Plus XL isotope ratio mass spectrometer configured for CO2, O2, SO2, N2, H2, and CH3Cl. In the current configuration, the Delta Plus XL is coupled to a laser-florination extraction line and is used for δ18O and δ17O analyses of silicates, δ37Cl analyses, δ2H by CF-TCEA and δ34S by CF-EA-IRMS.