Portable light sources, reagents, and latent prints

A new study from the NFSTC looks at "Comparison of Fingermark Detection Using Semiconductor Laser and LED Light Sources with Three Chemical Reagents".


A study comparing the fingermark detection capabilities of laser and light-emitting diode (LED) light sources has just been released in the technology evaluations section of NFSTC’s website. The study, which examines the performance of three lasers and an LED light source with three chemical reagents, was also published in the latest issue of IAI’s Journal of Forensic Identification.

The light sources used in the study were Coherent TracER lasers operating at 460 nm, 532 nm and 577 nm and the Rofin Polilight Flare Plus LED operating at 505 nm. The three chemical reagents investigated for their ability to enhance latent prints under these light sources were indanedione, genipin and lawsone. Which light source and reagent combination revealed the most latent prints? Download the technology evaluation report to find out.

(This study was funded by the NIJ through the Forensic Technology Center of Excellence operated by NFSTC.)

< Prev   Next >

Product News

Six interchangeable LED lamps

highlight the features of the OPTIMAX Multi-Lite Forensic Inspection Kit from Spectronics Corporation. This portable kit is designed for crime-scene investigation, gathering evidence, and work in the forensic laboratory. The LEDs provide six single-wavelength light sources, each useful for specific applications, from bodily fluids to fingerprints. The wavelengths are: UV-A (365 nm), blue (450 nm), green (525 nm), amber (590 nm), red (630 nm), and white light (400-700 nm). The cordless flashlight weighs only 15 oz. To learn more, go to: www.spectroline.com