The latent fingerprints module will cover the material below:
Biology and physiology of fingerprints
Latent fingerprint development techniques
Chemistry of cyanoacrylate fuming
Imaging of cyanoacrylate-enhanced fingerprints
The module consists of a set of open-ended guided-inquiry laboratory exercises to familiarize the
student with the practice and chemistry of cyanoacrylate-based fuming of latent fingerprint
There are few explicit instructions.
Although the focus is on cyanoacrylate fuming, the
student will study and familiarize themselves with the nature of friction ridge skin, ridge
characteristics, the anatomy of the hands and feet, the general chemical composition of sweat
and latent fingerprint residue, and common procedures and techniques for processing crime
scenes and evidentiary items for the recovery of latent prints.
The student will be required to
become knowledgeable in the choice and application of latent development techniques.
approach should be to read through the material (this packet, lecture notes, text, and references)
and develop a plan-of-action.
completing this module, you should be able to:
Lift or preserve latent impressions on any surface suitable for cyanoacrylate fuming.
Conduct a cyanoacrylate-based fuming under ±heated ambient air/cyanoacrylate,
controlled atmosphere, and vacuum conditions.
Understand and perform the variety of chemical techniques used in conjunction with
Understand the chemical components and reactions of the different techniques and their
Choose the appropriate technique for the existing environmental conditions.
Prepare appropriate solutions and mixtures.
Proper documentation of all activities in your course notebook and worksheets/forms.
Familiarity with the chemistry, technique, and application of the following methods:
ninhydrin, physical developer, powders, small particle reagent, cyanoacrylate ester,
ardrox, rhodamine 6G, MBD, inherent luminescence, amido black, and Gentian violet.
Succesful completion of this module will be determined by a combination
written/performance competency examination, which covers fuming development
techniques, chemical development techniques, and laser and alternate light source
Lee, HC and Gaensslen, RE, eds.
Advances in Fingerprint Technology
; Elsevier Science,
And references therein.
Pounds, CA and Jones, RJ (1983) Trends in Analytical Chemistry 2, 180-183.