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Photodiode-array (PDA) detector

An HPLC detector that records a full UV-Vis absorption spectrum at every elution time point, producing a 3D data matrix (time, wavelength, absorbance) that allows both retention-time and spectral matching for each separated component.

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ATR-FTIR (attenuated total reflectance FTIR)D band and G band (Raman)ENFSI FIDE-WGESI-MS (electrospray ionisation mass spectrometry)Reversed-phase HPLCRf value (retardation factor)Solvent-loss datingSWGMAT guidelinesVideo Spectral Comparator (VSC)

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