Spectral information provided by Photo Diode Array (PDA) in HPLC can provide valuable information to the analyst. However, viewing, manipulation and interpretation of spectra at the end of each run can be time-consuming. AZUR provides an easy navigation through the wealth of spectral information provided by Photo Diode Array detection. PDA Extension will add new features to the standard Azur interface. With the optional AZUR PDA, you can process full-spectrum data from diode-array detectors : 3-D data rendering, peak purity analysis and compound identification based on spectral library matches. At the moment, this module is only available for OEM customers.