To manage the large sample loads that are typical of many environmental testing laboratories, ICP-OES users need instruments that deliver fast sample-to-sample analysis times, while generating consistently high-quality results. Agilent has developed the Advanced Dilution System (ADS 2) for Agilent ICP-OES (and ICP-MS) instruments. The ADS 2 is an intelligent autodilution system, which includes an Advanced Valve System (AVS). The system improves the productivity of ICP-OES workflows by automating many manual tasks throughout the analytical sequence.