What is the difference between a spectrometer and a spectrophotometer?
A spectrometer is an instrument that measures the quantity of light over a spectrum of wavelengths. The spectrometer is the “measurement engine” of the spectrophotometer. A spectrophotometer is a complete system for making spectral measurements. The system includes a light source, means for collecting light that has interacted with the material under test, and a spectrometer to measure the collected light.
