This document defines capabilities and limitations of FTIR spectroscopy as it pertains to counterfeit electronic component detection and suggests possible applications to these ends. Additionally@ this document outlines requirements associated with the application of FTIR spectroscopy including: operator training@ sample preparation@ various sampling techniques@ data interpretation@ computerized spectral matching including pass/fail criteria@ equipment maintenance@ and reporting of data. The discussion is primarily aimed at analyses performed in the mid-infrared (IR) from 400 to 4000 wavenumbers; however@ many of the concepts are applicable to the near and far IR. If AS6171/9 is invoked in the contract@ the base document@ AS6171 General Requirements shall also apply.