Analytical Testing

Fourier Transform Infrared (FTIR) Spectroscopy

FTIR Spectroscopy is a powerful technique to gain chemical structural and compositional information about a material. Argen often makes use of an Attenuated Total Reflectance accessory to capture spectra on small specimens, including carbon black filled polymers.  Interpretation of spectra by our experts enables chemical identification of a variety of materials.

  • What is this unknown or foreign material?
  • What are the non-volatile components in this material?
  • What is the polymer in the compound?
  • What are the material’s chemical functional groups?
  • Micro-germanium ATR crystal
  • 400 to 4,000 cm-1 frequency range
  • Sample Requirements:  specimen of minimal dimension 2 x 2 x 2 mm ; solids, liquids
  • Pyrolysis techniques are available when necessary
  • Extensive library of FTIR spectra to aid in interpretation and band assignment

Example Test Protocols

ASTM D3677

Polymer Identification – Poly ID – Fingerprint Only

Standard Test Methods for Rubber — Identification by Infrared Spectrophotometry


Standard Practices for General Techniques of Infrared Quantitative Analysis

ASTM E1252

Standard Practice for General Techniques for Obtaining Infrared Spectra for Qualitative Analysis

ASTM D7399-08

Standard Test Method for Determination of the Amount of Polypropylene (PP) in Polypropylene/LDPE Mixtures Using Infrared Spectrophotometer (FTIR)


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