FTIR Analysis Service

Fourier Transform Infrared Spectroscopy

Fourier Transform Infrared Spectroscopy (FTIR) is an analytical technique used to identify mainly organic materials. FTIR analysis results in an absorption spectra which provides information about the chemical bonds and molecular structure of a material. The FTIR spectrum is equivalent to the “fingerprint” of the material and can be compared with cataloged FTIR spectra to identify the material. 

A paper that discusses FTIR in more detail can be found here. For analysis of alloys, ceramics, and inorganic compounds visit our EDS analysis page.


A few examples of common materials identified by FTIR are shown below.



  • Cleansers and Detergents
  • Baking Powders and Ingredients
  • Paints
  • Oils
  • Paper
  • Medications



  • Thermosets (hard plastic)
  • Elastomers (rubber)
  • Thermoplastics (polyethylene (PE), polyvinyl chloride (PVC) and polystyrene (PS))



  • Oils
  • Food Products
  • Gels



  • Synthetic Fibers (acrylic, nylon, polyester, rayon)
  • Natural Fibers (cotton, silk, wood)



  • Glue
  • Epoxy
  • Resin
EDS spectrum of an intermetallic needle in a Pb-free solder joint. The spectrum suggests that this is Ag-Sn intermetallic compound.
This is the FTIR spectrum of the electrolyte from inside the capacitor.
FTIR spectrum of electrolyte from inside a capacitor.



FTIR Analysis

FTIR analysis offers several advantages over other techniques.  It can be used to test solid or liquid samples.   Compared to other analysis methods it requires little or no sample preparation and no chemicals or consumables.  In many cases it is non-destructive.

Materials Analysis EDS Analysis