Why does a spectrophotometer need to be zeroed?

Document ID

Document ID TE9704

Published Date

Published Date 07/12/2021
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Question
Why does a spectrophotometer need to be zeroed?
Summary
Defines why a spectrophotometer needs to be zeroed
Answer
Spectrophotometers and colorimeters are zeroed or "blanked" to reset the absorbance baseline to any background color in the sample that may absorb at the wavelength in question causing an interference.

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