NCJ Number: 218706
Title: Effectiveness of Liqui-Drox and a Comparison to Other Adhesive-Side Processes on a Variety of Tapes
Author(s): Alison S. Rees; Rebecca L. Schwartz
Date Published: January 2003
Page Count: 5
Sponsoring Agency: US Dept of Justice Federal Bureau of Investigation
Sale Source: US Dept of Justice Federal Bureau of Investigation
Document: HTML
Type: Report (Study/Research)
Format: Document (Online)
Language: English
Country: United States of America
Annotation: This study assessed the effectiveness of Liqui-Drox as a process for developing latent fingerprints on the adhesive side of a variety of types of tapes, comparing it to the following standard processes at two lengths of storage time: alternate black powder, ash gray powder, gentian violet, and sticky-side powder.
Abstract: The study concluded that Liqui-Drox is sufficiently effective to be used as a standard process for immediate development of latent prints on the adhesive side of clear Scotch tape, dark brown packing tape, and orange transparent packing tape; however, 1 month after the storage of tape on acetate, Liqui-Drox had reduced effectiveness in developing latent prints. Liqui-Drox can also be used as an alternative method on some tapes. Because prints developed with Liqui-Drox will fade under increased exposure to long-wave ultraviolet light, they should be photographed as soon as possible. Liqui-Drox did not develop fingerprints on 11 of the 25 tapes. Liqui-Drox is a fluorescent process proven effective in developing latent prints on both sides of dark tapes; however, prior to this study, it had not been assessed on light-colored tapes, and it had not been compared to other adhesive-side processes. Fingerprints were placed on 2 sets of 25 tapes of varying colors, brands, and widths. The sets were processed at two different times: approximately 2 minutes after the fingerprints were deposited on the tape and after 1 month of storage in an evidence locker. Four latent print examiners analyzed and rated each photographed fingerprint based on the number of level-two detail features. 2 references
Main Term(s): Criminology
Index Term(s): Fingerprint image quality; Fingerprints; Forensic sciences; Investigative techniques; Latent fingerprints
Note: From Forensic Science Communications, N 1, V 5, January 2003; downloaded June 5, 2007.
To cite this abstract, use the following link: http://www.ncjrs.gov/App/publications/abstract.aspx?ID=240447
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