NCJ Number
238367
Journal
Journal of Forensic Identification Volume: 62 Issue: 2 Dated: March/April 2012 Pages: 109-128
Date Published
April 2012
Length
20 pages
Annotation
This study evaluated the application of fingerprint powders by means of an aerosol spray as a possible alternative to the traditional method of application.
Abstract
Investigators are frequently faced with the task of processing crime scenes where the evidence cannot be readily shipped to the laboratory for analysis. In such cases, the investigator typically relies on fingerprint powders to develop latent print impressions. Conventional methods of fingerprint powder application can increase the possibility of damaging or destroying latent print impressions, primarily by the application of too much powder. An alternative method of applying fingerprint powder to the surface using an aerosol spray has been introduced in the past, but yielded unsatisfactory results. Modifications in formulation and aerosol technology have rendered the application of aerosolized fingerprint powders a viable alternative, making it a less challenging and a more convenient method of applying fingerprint powder. Aerosol spray helps to control the amount of powder released while maintaining an even distribution onto the surface and decreases the amount of brush contact with the substrate surface needed to fully develop the impression, thereby lessening the chance of damaging the impression. Furthermore, this method exhibits no adverse effects on deoxyribonucleic acid (DNA). (Published Abstract)