The range of applications that can be addressed by Agilent Technologies' 7500 Series of ICP-MS instruments can be considerably extended using optional sample introduction accessories and software modules. These optional accessories include Agilent's unique Integrated Sample Introduction System (ISIS), which enhances the functionality of the basic ICP-MS and realizes the true potential of the Agilent 7500 Series. Designed and manufactured by Agilent, ISIS features high precision peristaltic pumps and optional switching valves to allow complete flexibility of configuration. This offers the analyst an array of possibilities for sample introduction and can even be used for on-line sample preparation.