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Latent Print Development

The Fingerprint Sourcebook - Chapter 7


National Institute of Justice

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Introduction

Latent fingerprint development may be achieved with a wide array of optical, physical, and chemical processes, most having evolved during the past century. Because some techniques are often intricately related and continuously changing, it is imperative that those involved in laboratory and crime scene processing are well trained and well practiced (Trozzi et al., 2000, pp 4–9; Kent, 1998).

For those involved in crime scene and laboratory work, safety is paramount. It is important to follow safe work practices when using the processes described in this chapter. This can be accomplished by observing manufacturer warnings, reading material safety data sheets, and observing one’s own institutional policies regarding evidence handling and fingerprint development. It is also important for those working with potentially hazardous materials or equipment to wear the appropriate personal protective equipment, such as gloves, lab coats, eye protection, and respirators; to use engineering controls such as fume hoods; and to practice proper laboratory procedures to reduce exposure to pathogens or harmful chemicals (Masters, 2002).

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