A Fourier Transform Infrared Spectrophotometer, abbreviated as FTIR, can generate an infrared spectral scan of samples that absorb infrared light. FTIR is the first step in identifying a polymer. FTIR analysis helps to understand materials and products. FTIR identifies chemical bonds in a molecule by producing an infrared absorption spectrum. The spectra produce a profile of the sample, a distinctive molecular fingerprint that can be used to screen and scan samples for many different components. FTIR is an effective analytical instrument for detecting functional groups. FTIR is also used for quality control of materials, unknown identification and for contamination analysis.

It is also used for the identification of additives in UV, Antioxidant, slip, Processing aid, Anti-block, anti-fog, anti-state masterbatch.