Chromatography is used to separate substances from crime scene samples to pinpoint information about materials. This information can then assist investigators with finding what was used by criminals.Continue Reading
Chromatography is particularly useful in analyzing materials used in bombs and explosives. High-pressure liquid chromatography (HPLC) involves placing samples in a tube and extracting the materials using downward pressure. A machine is used to detect the speed at which the particles leave the tube. The measurements are used to identify the materials because they leave the tube at different speeds.
Chromatography is also useful to identify perpetrators of bank robberies. Money bundled in banks routinely contains a small dye bomb that projects bright red dye when triggered. Each dye has a unique chemical composition, and chromatography can be used to determine if there is the specific red dye on a suspect's clothing.Learn more about Forensic Science
Blood spatter analysis is a forensic science involving the study of bloodstain patterns that criminologists use to reconstruct the events of a suspected crime. Analysts examine subtle factors such as the placement, shape and volume of blood to determine the weapon and amount of force used in an attack.Full Answer >
Forensic photography is a type of photography that showcases accidents and crime scenes. This type of photography creates a visual record of evidence usable by the police and in court.Full Answer >
A dissecting tray provides containment for materials resulting from the dissection process. It allows enough space for the analysis of the specimen to take place while also providing drainage for water and other substances.Full Answer >
A comparison microscope is a specialized microscope that allows for a side-by-side comparison of different materials. Invented by Calvin Goddard in the 1920s, these microscopes are often used today by the FBI and other law enforcement to determine the similarities of objects such as hairs and fired ammunition.Full Answer >