ISSN: 0022-1198
CODEN: JFSCA
Page Count: 10

Dye Batch Variation in Textile Fibers
Wiggins, KG
Forensic biologists, Metropolitan Police Forensic Science Laboratory,

Cook, R
Forensic biologists, Metropolitan Police Forensic Science Laboratory,

Turner, YJ
Forensic biologists, Metropolitan Police Forensic Science Laboratory,

(Received 17 August 1987; accepted 6 October 1987)

Abstract

Fiber samples from a number of different sources have been examined for dye batch variation. The manufacturers who supplied material included producers of knitting yarn, clothing, carpets, and car seat covers. Microscopy, microspectrophotometry, and thin-layer chromatography have been used for comparison of the dyes.

Degrees of variation were found. With some knitting yarns there was none at all, but some clothing fabrics showed large differences. Thin-layer chromatography is the best means of discriminating between dyes extracted from these materials.

The reasons for these results and their implications for the court-going officer are discussed.

Keywords:
forensic science, fibers, synthetic fibers, dyes, microscopy, spectroscopic analysis, chromatographic analysis, dye batch variation

Paper ID: JFS12522J
DOI: 10.1520/JFS12522J
ASTM International is a member of CrossRef.