• ASTM E2937-18

ASTM E2937-18

  • Standard Guide for Using Infrared Spectroscopy in Forensic Paint Examinations
  • standard by ASTM International, 02/01/2018
  • Category: ASTM

$48.00 $24.00

1.1 This guide applies to the forensic IR analysis of paints and coatings and is intended to supplement information presented in the Forensic Paint Analysis and Comparison Guidelines (1)2 written by Scientific Working Group on Materials Analysis (SWGMAT). This guideline is limited to the discussion of Fourier Transform Infrared (FTIR) instruments and provides information on FTIR instrument setup, performance assessment, sample preparation, analysis and data interpretation. It is intended to provide an understanding of the requirements, benefits, limitations and proper use of IR accessories and sampling methods available for use by forensic paint examiners. The following accessory techniques will be discussed: FTIR microspectroscopy (transmission and reflectance), diamond cell and attenuated total reflectance. The particular methods employed by each examiner or laboratory, or both, are dependent upon available equipment, examiner training, specimen size or suitability, and purpose of examination. This guideline does not cover the theoretical aspects of many of the topics presented. These can be found in texts such as An Infrared Spectroscopy Atlas for the Coatings Industry (Federation of Societies for Coatings, 1991) (2) and Fourier Transform Infrared Spectrometry (Griffiths and de Haseth, 1986) (3).

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