The fastest, most sensitive multimode HTS microplate reader available on the market. The PHERAstar FS contains a wide range of detection modes along with unique and advanced technology to enhance each mode -- three excitation sources, including two lasers for TR-FRET and AlphaScreen®; dual emission detection with four photomultiplier tubes for faster read times and better Z' values; a UV/Vis spectrometer for capturing all absorbance wavelengths; direct optic bottom reading for unmatched cell based assays; reagent injection at the point of measurement; and 3456-well capability for nanoliter high-throughput screening.