The ACQUITY UPLC Photodiode Array (PDA) Detector offers advanced optical detection, providing unprecedented trace impurity detection and quantitation with spectral analysis capabilities. It is the ideal detector for any laboratory application, from compound identification to method development. For routine analyses, the ACQUITY UPLC PDA Detector is reliable, easy-to-use, and has enhanced software control to provide flexibility for simultaneous 2D and 3D operation.