Which detection mode is associated with continuous flow analyzers as described?

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Continuous flow analyzers rely on a colorimetric detection approach. In these systems, the chemical reaction in the flowing stream produces a colored product, and a fixed-wavelength light beam passes through the sample. The detector measures how much light is absorbed, giving an absorbance reading that is proportional to the analyte concentration. This photometric, inline detection is simple, robust, and well-suited to the rapid, continuous processing of many samples in CFA. Other detection modes like fluorescence, radiometric, or mass spectrometry require different instrumentation and are not the standard approach for classic continuous-flow automation.