Proper preparation and analysis of isotope samples are essential for the interpretation and development of a sound assessment of water resources and potential water supplies. This DVD provides an overview of laboratory methods used for preparation and analysis of samples for deuterium and oxygen-18, carbon-13 and carbon-14, noble gases, tritium and CFCs. Many analytical details are covered allowing a view of individual analytical methods to gain an in-depth understanding about how to conduct isotope analyses in the laboratory.