The BD FACS Aria IIu is the original model FACS Aria-I cell sorter that has been upgraded with a FACS Aria II flow cell.  It is equipped with 3 lasers: a blue 488nm laser (6 detectors + FSC/SSC), a red 633nm laser (3 detectors), and a violet 405nm laser (4 detectors).  The optical configuration allows multi-parameter detection of up to 13 fluorescent parameters and 2 light scatter parameters. The FACS Aria-IIu is capable of sorting through over 50 million cells per hour (dependent on cell type), with up to four populations simultaneously. The populations of interest can be sorted into 0.5 mL/1 mL Eppendorf tubes, 5 mL tubes, or 15 mL conical tubes.  Populations can also be sorted directly into multi-well plates, including: 12-well, 24-well, 48-well, 96-well.