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Why is distilled water used as blank in most of the colorimetric experiments?

April 26, 2017Biology blank Colorimetric Distilled experiments Mathematics Used water

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Why is distilled water used as blank in most of the colorimetric experiments?

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Blank is not always prepared with distilled water,it is prepared basing on the solvent of stock solution, that is Eg:In glusoce estimation,for the stock solution preparation know amount of Glucose is dissolved in the water. For this experiment Blank is prepared with distilled water. Use of Blank reading: Blank reading gives only reagents concentration (without solute concentration).When we substract this blank reading from test readings,finally we get concentrating of solute.