Digital colorimeter with cuvettes

Digital colorimeter with cuvettes

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Credit: SCIENCE PHOTO LIBRARY

Caption: Digital colorimeter measuring a sample, with several sample cuvettes. The colorimeter measures the absorbance of different wavelengths of light by a liquid sample. The absorbance is directly proportional to the concentration of the absorbing substance, according to the Beer-Lambert Law. Here a dilute samples of beetroot juice are being studied. Absorbance is measured on a logarithmic scale from 0 to infinity, although 0 to 2 is the most useful range.

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Keywords: absorbance, absorption, beer-lambert law, beetroot juice, chemical, chemistry, cut out, cut-out, cutout, cuvette, cuvettes, data, datum, digital colorimeter, education, experiment, fluid, instrument, light, liquid, logarithmic, measurement, measuring, optics, physical, physics, range, school, school science, science education, studio shot, variety, white background

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