Wavelength

UV Detectors and Photodiode Array Detectors are the most commonly used detector types in HPLC. Simple UV detectors record chromatograms at a defined wavelength (l), while PDA detectors record them in a defined wavelength range. The wavelength and the wavelength range, respectively, depend on the detector and can vary from 190 to 900 nm.

This value indicates the wavelength at which a chromatogram is measured.

On Dionex photodiode array detectors, the wavelength is not set directly on the instrument, but via the PC. It is also possible to enter the wavelength manually, either during the analysis or in the PGM File.

For the UV-VIS, 3DFIELD, and SPECTRA signals, wavelength means the central wavelength; that is, the wavelength around which a field with a symmetrical Bandwidth forms.

Also, refer to Wavelength