Alternate Light Source Fingerprint

Other uses of alternate light sources indeed many forms of physical evidence will fluoresce.

Alternate light source fingerprint.

One use for alternate light sources is the examination of a weapon such as a gun or knife. Although blood does not fluoresce certain other physiological fluids will. But when viewed under a green light and observed through an orange filter the prints can easily be seen. Also certain narcotics will fluoresce as will bone and teeth fragments.

Let s go back to the example of the bloody fingerprint. If we are fortunate enough that the print is on a smooth surface we start by holding the light source at a 45 degree angle. When light reflects off a smooth surface we refer to this as specular reflection. When light reflects off a rough surface we refer to it as diffused reflection.

Fluorescent powders are used widely as the primary method of fingerprint treatment at crime scenes when using a forensic or alternate light source. Laboratory lasers are high power but also have the highest price and they lack versatility. Of all the classes of alternate light sources. Rofin lumatec ultralight labino and fox fury brand available.

All examples below are using the crimescope cs 16 500w. Leds are lowest in price but also lowest in power and they lack versatility. Alternate light sources alternate light sources are typically used in crime scene investigation to identify many forms of evidence. Uv alternate light sources can reveal the following.

Seminal fluid saliva and urine stains. Attestor forensics us inc is passionate about helping you solve crime through innovative and high quality forensic equipment premium forensic laboratory and crime scene equipment including fingerprint development chambers cyanoacrylate fuming systems downflow forensic workstations and alternate light sources. Based alternate light source designed specifically for use in forensic applications. Finger and palm prints are nearly invisible on such metal surfaces when examined under room light.

They are available in various colors. Red green orange pink yellow gold blue are the most common. Physiological fluids semen urine and saliva can be identified through their natural fluorescent properties utilizing uv light.