蜜芽传媒

Melvyn Bragg talks to Senior Lecturer in Forensic Science at King's College London Leon Barron about the widely used technique of chromatography. The process of putting a spot of ink at the bottom of a strip of paper, dipping it in water, then watching the pigments spread upwards revealing their separate colours is actually an integral part of our daily lives, often without us realising.

First broadcast on In Our Time, 4 February 2016.