Dionex introduces a new microfraction collection option for its WPS-3000 Nano and Capillary LC autosampler series. This option supports fully automated off-line multidimensional liquid chromatography, providing customers with a tool for applications, including proteomics research. The microfraction collection option simplifies multidimensional separations by allowing columns that differ in chemistry and internal diameter to be combined on a single LC system with dual gradient flow delivery and a proprietary flow path design. This new option enables full automation of injection, fractio-nation, and reinjection.