Chromatography is an analytical method to separate a mixture into different components based on their chemical properties.
The increased popularity of forensic science has exposed the public to tools of analysis previously unknown outside of the scientific community.
From the BBC. Dr Yan from the Bang Goes the Theory solves the crime of who stole his doughnuts using paper chromatography. He explains how to perform the experiment and how to interpret the result to solve the crime. Includes a short video clip.
Khan Academy Medicine