SPD-M20A Prominence HPLC Photo Diode Array Detector provides the most advanced sensitivity and stability in today's PDA detector. The SPD-M20A has many qualities of the SPD-20A/20AV UV-visible detector, and its sensitivity level is close to the most advanced UV-visible detector. It has a high sensitivity mode with a slit width of 8 nanometers. Using light source compensation, it can provide a noise level of 0.6×10 AU, which is similar to that of traditional UV-VIS detectors.