Why does a spectrophotometer need to be zeroed?

Document ID

Document ID TE9704

Version

Version 2.0

Status

Status Published

Published Date

Published Date 27/02/2019
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 colour in the sample that may absorb at the wavelength in question causing an interference.
Attachments
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