Spectrophotometer

Definition

A spectrophotometer is an instrument used in scientific analysis that measures how much a chemical substance absorbs (or transmits) at each wavelength of light.

Related terms

Photodetector: A device that converts incoming photons into an electrical signal for measurement purposes.

Cuvette:

A small tube-like container with straight sides and round or square cross section for holding samples in spectroscopic experiments.

Sample Solution: The mixture containing the compound whose absorption spectrum is being measured.