Tool manager: Penny Burke
Location: Duffield 201

Infrared (IR) spectroscopy is a chemical analytical technique that detects the vibration characteristics of chemical functional groups in a sample. When infrared light interacts with a molecule, chemical bonds will stretch, contract and bend. As a result, chemical functional groups tends to adsorb infrared radiation in specific wavenumber ranges and thus can be used for molecular identification.


  • Spectral range: ~600-6000 cm-1.
  • Two detector options: DLaTGS detector designed to work at room temperature, and an MCT 315 detector which is liquid nitrogen cooled and about 30% more sensitive than the DLaTGS.
  • Diamond ATR crystal accessory for all kind of bulk samples
  • Germanium ATR crystal accessory for high refractive index bulk samples
  • Large-area germanium ATR crystal accessory for organic monolayers on silicon
  • Variable grazing angle accessory with polarizer for characterization of thin films on reflective surfaces
  • Vacuum evacuated optics and sample compartment, minimizing background adsorption from CO2 and H2O.
  • T304 beamsplitter and Globar mid-IR source.



Instrument protocols in the "downloads" menu to the right.

FT-IR Manufacturer's website

Interpreting IR Spectra: A Practical Approach

Other useful FTIR related links

Website of ATR manufacturer

Website of variable angle sample holder manufacturer

FTIR analysis software package (not free, but handy)