The+Chemistry+of+Fingerprinting

**LATENT FINGERPRINTING. Leah. Jessica.** A sequential set of three fingerprints need to be placed on each of the non-porous surfaces: glass, finished wood, and tile and then dusted using black latent fingerprint powder and lifted with clear tape. This is to ascertain the ability of the powder to adhere to the prints left on the varying surfaces, as well as its ability to adhere to the decreased potency of the organic and inorganic makeup of a fingerprint from the first touch to a surface to the third touch. Three consecutive fingerprints were placed on the surfaces: glass, finished wood, and tile throughout five trials. The prints were then dusted with black latent fingerprint powder using a camel hair paintbrush. Each print was individually lifted from its respective surface using a clear packing tape, then placed on white paper. All of the prints were graded based on a system developed by the Home Office Development Branch (2006). Disagreement between the results from the data collected and that of the Home Office Development do not support a decisive conclusion as to whether or not black latent fingerprinting powder varies in its effectives on different non-porous surfaces or from the first touch to a surface to the third touch. __FIGURE__
 * __ DISCUSSION __**
 * Keywords:** Latent Fingerprinting; Non-Porous Surfaces; Black Fingerprinting Powder

__RESULTS GRAPHIC__

__JOURNAL ARTICLE__ Bandey, Helen, L. & Gibsonthat, Andrew P. (February 2006). THE POWDERS PROCESS, STUDY 2: Evaluation of Fingerprint Powders on Smooth Surfaces. //Fingerprint Development and Imaging Newsletter: Special Edition////, volume// 08/06. 20 February 2009, from http://scienceandresearch.homeoffice.gov.uk/hosdb/publications/fingerprint-publications/FingerprintNewsFeb0806

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