The UCD School of Earth Sciences requires a Dual Inlet Isotope Ratio Mass Spectrometry System. This equipment will be central to the development of a new dissolved gas tracer laboratory at UCD that is being established to support a recently awarded European Research Council project. The project aims to apply new highprecision dissolved-gas and isotope tracers to understand physical and biogeochemical processes in groundwater systems over timescales ranging from decades to centuries.