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Definition : Photometers that determine the absorbance or transmission of the light energy transmitted through a solution (or a gas) at any narrow adjustable (typically from 0.1 to 10 nm) bandwidth. Their principal components are a stable light source, a dispersing device (grating or prism monochromator), a cuvette, an adjustable slit, a photodetector, appropriate electronics to process the detector signal, and a means of displaying the results. These instruments have clinical applications primarily for the quantitative analysis of biological substances and enzymes or drugs and their metabolites in specimens.

UMDC code : 15601

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