Instructor: Jennifer Peterson
Course length: 40 hours

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The Physical & Chemical Processing of Latent Print Evidence course includes comprehensive training in evidence collection and physical and chemical processing of latent print evidence as well as latent print photography.  The course will provide both lecture material and hands-on practical exercises.

Course Topics Include:

• Introduction to the anatomy and physiology of latent prints and latent print residue
• Major case prints and postmortem exemplars
• Latent print evidence collection practices related to specific forensic disciplines
     - firearms
     - digital forensics
     - fire investigation
     - biological evidence
     - questioned documents
• Personal protective equipment laboratory safety
• Case file management, documentation, and pre-processing evidence photography
• Latent print processing: Porous and Non-Porous
• Latent print processing: Special Circumstance
     - fire debris
     - human skin
     - wet surfaces
     - tape adhesive
     - greasy surfaces
• Latent print processing: Blood
• Forensic light sources and latent print photography

Latent Print Development Methods Include:

• 1,2 Indanedione
• DFO
• Ninhydrin
• Cyanoacrylate
• Rhodamine 6G
• Ardrox
• RAM
• Basic Yellow/Basic Red
• Fingerprint powders: Black, Magnetic, and Fluorescent
•  Acid Yellow 7
• Amido Black
• Leucocrystal Violet
• Coomassie Blue
• Crystal Violet
• Small Particle Reagent
• Sudan Black

At the conclusion of the Physical & Chemical Processing of Latent Print Evidence course, the student should know how to maintain the integrity of latent print evidence from the crime scene to the laboratory, understand the physiological components of latent print residue, and recognize the appropriate latent print processing technique(s) calculated by matrix, substrate, and environmental considerations.

The student will learn how to preserve the latent print evidence using forensic light sources, advanced photography techniques, and proper image storage practices.

The student will be able to testify in court with more confidence when describing their decisions in evidence collection and evidence processes completed.



This course has been approved for 40 hours of certification/recertification training credit by the IAI Crime Scene Certification Board, the Latent Print Certification Board, and the Tenprint Fingerprint Certification Board. 

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