ASTM E3234 - 20

    Standard Practice for Forensic Paint Analysis Training Program

    Active Standard ASTM E3234 | Developed by Subcommittee: E30.01

    Book of Standards Volume: 14.02

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    Significance and Use

    3.1 The procedures outlined herein are grounded in the generally accepted body of knowledge and experience in the field of forensic paint examination and comparison.

    3.2 With successful completion of this paint analysis training program, the trainee gains the theoretical knowledge and practical skills necessary to perform, document, and evaluate forensic paint examinations and comparisons.

    3.3 This training practice covers a variety of instrumental methods which can be used in the analysis of paint. Not all laboratories will have access to all of the instrumentation. It is expected that a paint analysis training program will include all the techniques that are found within a laboratory's procedures for the forensic examination of paint.

    3.3.1 Instrumental methods that provide organic and inorganic analysis capabilities are utilized in the laboratory training program. Examples include Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, pyrolysis gas chromatography (PGC), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM/EDS), X-ray fluorescence (XRF), and X-ray diffraction (XRD).

    1. Scope

    1.1 This document is intended as a practice for use by laboratory personnel responsible for training examiners to perform forensic examinations and comparisons of paint. It contains a list of training objectives with recommended methods of instruction, reading assignments and structured exercises to provide practical experience for the trainee.

    1.1.1 The trainees and training program shall meet or exceed the minimum training requirements set forth in Practice E2917.

    1.1.2 Additional training could be required for a particular method or instrument referred to herein. The application of analytical techniques to paint analysis assumes the trainee is already competent in the use of each particular analytical technique or instrumental method.

    1.1.3 Other sources of information on forensic paint examination not specifically mentioned in this document can be considered and added.

    1.1.4 Additional paint analysis training beyond that which is listed here should be made available to the trainee. Such training could include off-site courses, internships, and specialized training by experienced examiners.

    1.1.5 Continuing education and training is recommended. Additional training provides a forensic paint examiner with the opportunity to remain current in the field.

    1.1.6 Paint samples occasionally are evaluated for physical matches of broken edges. This document does not provide training requirements for physical match comparisons. Additional training is required to conduct this type of analysis.

    1.2 This practice is in a modular format for easy adaptation to an individual laboratory’s training program. Recommendations as to lessons, practical exercises, progress monitoring, and trainee evaluations are included. Reading assignments are listed in each subsequent section of this practice; full citations are available in the References section.

    1.3 A paint analysis training program provides a theoretical foundation and basic practical skills necessary to prepare a trainee to become a qualified forensic paint examiner. At the end of the paint analysis training program, the trainee is capable of forming opinions based upon sound scientific knowledge, appropriate examinations, and practical experience. The trainee also is able to independently work cases, write reports, testify in court, and peer review cases. Upon completion of the program by a trainee or at some regular interval (for example, once per accreditation cycle), the training program should be evaluated for its efficacy and relevance according to the guidance set forth in Practice E2917.

    1.4 This standard practice does not address human factors (for example, cognitive bias). It is the responsibility of the user of this standard to address human factors during the initial or general training of a forensic scientist. Refer to Practice E2917.

    1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D16 Terminology for Paint, Related Coatings, Materials, and Applications

    D1535 Practice for Specifying Color by the Munsell System

    D4764 Test Method for Determination by X-ray Fluorescence Spectroscopy of Titanium Dioxide Content in Paint

    D5380 Test Method for Identification of Crystalline Pigments and Extenders in Paint by X-Ray Diffraction Analysis

    D5381 Guide for X-Ray Fluorescence (XRF) Spectroscopy of Pigments and Extenders

    E308 Practice for Computing the Colors of Objects by Using the CIE System

    E1459 Guide for Physical Evidence Labeling and Related Documentation

    E1492 Practice for Receiving, Documenting, Storing, and Retrieving Evidence in a Forensic Science Laboratory

    E1610 Guide for Forensic Paint Analysis and Comparison

    E2808 Guide for Microspectrophotometry in Forensic Paint Analysis

    E2809 Guide for Using Scanning Electron Microscopy/X-Ray Spectrometry in Forensic Paint Examinations

    E2917 Practice for Forensic Science Practitioner Training, Continuing Education, and Professional Development Programs

    E2937 Guide for Using Infrared Spectroscopy in Forensic Paint Examinations

    Referencing This Standard
    Link Here
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    DOI: 10.1520/E3234-20

    Citation Format

    ASTM E3234-20, Standard Practice for Forensic Paint Analysis Training Program, ASTM International, West Conshohocken, PA, 2020,

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