Request InfoMcPHERSONMcPherson Inc. has introduced a four-channel fluorescence detector that uses line emission light sources and narrowband filters for discrete wavelength excitation. The system is compatible with the company's high-pressure liquid chromatography flow cells, with volumes ranging from 6 to 24 µl and others available upon request. Optically filtered fluorescent signals are detected by four high-gain photomultiplier detectors that can be configured for series or parallel operation. 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