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What Is the Purpose of a Blank in Spectrophotometry

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Using a blank to zero the spectrophotometer is to make sure the spectrophotometer is in working order. Running a blank allows you to document the influence of the particular instrument on your readings. Visible Vis Spectrophotometer Lab Equipment With Software 360 1000nm 4 Nm 721n Ebay In 2021 Lab Equipment Lab Home Automation They document the baseline response of the environment-instrument-sample system. . It is analogous to zeroing a scale before weighing. For example say you lysed some cells in a buffer that contained a detergent. The purpose of using a blank is to calibrate the spectrophotometer to zeroabsorbance. The blank solution will contain everything that the unknown solution the one you want to measure except for the think you wish to measure. It is analogous to zeroing a scale before weighing. The blank is some appropriate solution that is assumed to have an absorbance value of zero. However t
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