Sapling Learning Mapddu A spectrophotometer measures the transmittance or the ab

Question

Sapling Learning Mapddu A spectrophotometer measures the transmittance or the absorbance, or both, of a particular wavelength of light after it has passed through a liquid sample. Before the transmittance or absorbance of the sample is measured, a cuvette filled only with solvent, called the blank, is placed in the spectrophotometer. Select the following step that is NOT necessary to complete before a cuvette is placed into the spectrophotometer. O O O O Make sure the cuvette is filled only 3/4 full to prevent spilling of the sample. Write, in ink, either sample or blank on the side of the cuvette to keep track of them. Inspect the cuvette for any scratches or cracks. If present, replace the cuvette. Make sure the cuvette is oriented in the spectrophotometer in the same way each time it is used NextExit Hint

Explanation / Answer

In order to put the cuvette in the spectrophotometric chamber we couldn't write in ink on this cuvette.when we mark with ink then the light will scatter.So we cannot write in ink either sample or blank on theside of the cuvette to keep track of them.

Therefore all other options are right except second one.

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