Various spectrophotometers

UV-Visible Absorption Spectrophotometer
Measure UV and visible light absorption and colloidal concentration of substances

Fluorescence spectrophotometer
Measures excitation and fluorescence spectra of fluorescent materials

Fourier Transform Infrared Spectrometer (FTIR)
Measures the infrared absorption of a substance

Fourier Transform Near Infrared Spectrometer (FTNIR)
Measures near-infrared light absorption of a substance