The Waters 2475 Fluorescence (FLR) Detector offers unsurpassed sensitivity for quantifying low concentrations of target compounds, whether naturally fluorescent or derivatized with a fluorescent tag. The 2475 FLR Detector sets the standard for fluorescence method development with 3D and “on-the-fly” spectral scanning for determining the optimal emission and excitation wavelengths, and has the ability to monitor up to four independent wavelength pairs.