ASTM E2926
Standard Test Method for Forensic Comparison of Glass Using Micro X-ray Fluorescence (µ-XRF) Spectrometry
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About This Item
ASTM E2926 is the standard test method for forensic comparison of glass using micro X-ray fluorescence (µ-XRF) spectrometry. It provides a technical framework for examining glass fragments and comparing their elemental characteristics in a controlled, repeatable way. Forensic laboratories use this kind of ASTM standard to support more consistent testing and interpretation when evaluating glass evidence, helping reduce uncertainty in comparison work and improving the reliability of analytical results.
Purpose of ASTM E2926
The purpose of this standard is to define a recognized test method for comparing glass by means of µ-XRF spectrometry. By outlining a structured approach, ASTM E2926 helps laboratories apply the same analytical principles when assessing whether two glass samples may be similar or different. This is especially useful in forensic settings, where small material differences can matter. The standard supports consistency in measurement, documentation, and comparison practices across testing workflows.
Common use cases of ASTM E2926
This standard is commonly used in forensic glass examination, particularly when analysts need to compare questioned fragments with known samples. It is relevant in laboratory workflows that involve trace evidence analysis and microanalytical testing of glass pieces. ASTM E2926 may also support casework documentation, method validation, and internal quality practices where µ-XRF spectrometry is used to evaluate the elemental composition of glass for comparison purposes.
Why ASTM E2926 matters
ASTM E2926 matters because forensic comparisons of glass can influence investigative and evidentiary decisions. A standardized test method helps promote consistency, supports defensible reporting, and reduces variability between laboratories or analysts. For organizations that rely on trace evidence testing, the standard can aid compliance, improve quality control, and strengthen confidence in procurement or method selection for µ-XRF-based glass comparison work. ASTM E2926 also helps align testing practice with a recognized technical document.
- Forensic glass comparison by µ-XRF
- Elemental analysis of glass fragments
- Structured laboratory comparison method
- Trace evidence testing support
- Quality and consistency in reporting
- Publication Date: 2025-07-23
- Publisher: ASTM
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