Alternate Light Source Fingerprint

All examples below are using the crimescope cs 16 500w.

Alternate light source fingerprint.

Fluorescent powders are used widely as the primary method of fingerprint treatment at crime scenes when using a forensic or alternate light source. Finger and palm prints are nearly invisible on such metal surfaces when examined under room light. Also certain narcotics will fluoresce as will bone and teeth fragments. Laboratory lasers are high power but also have the highest price and they lack versatility.

One use for alternate light sources is the examination of a weapon such as a gun or knife. When light reflects off a rough surface we refer to it as diffused reflection. Leds are lowest in price but also lowest in power and they lack versatility. Although blood does not fluoresce certain other physiological fluids will.

Physiological fluids semen urine and saliva can be identified through their natural fluorescent properties utilizing uv light. Red green orange pink yellow gold blue are the most common. Available in several styles with or without removable heads rechargeable and battery operated. When light reflects off a smooth surface we refer to this as specular reflection.

Rofin lumatec ultralight labino and fox fury brand available. But when viewed under a green light and observed through an orange filter the prints can easily be seen. 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.

Alternate light sources alternate light sources are typically used in crime scene investigation to identify many forms of evidence. Let s go back to the example of the bloody fingerprint. Forensic light sources are high power. Other uses of alternate light sources indeed many forms of physical evidence will fluoresce.

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. Uv alternate light sources can reveal the following. Seminal fluid saliva and urine stains.