Chromatography, which translates to “color writing,” is the process of separation of colors through a process of dissolving a mixture at different speeds. Chromatography, first pioneered by Mikhail Tsvet in 1900, is one of science’s biggest breakthroughs in terms of the range of processes it can be applied to. This Khan Academy explains the basics of Chromatography, paper, thin layer, size-exchange, column, ion exchange, HPLC, affinity, and so on:
For example, not only can chromatography separate liquid, but it can also separate gas, drugs, proteins, and foods. It can be applied to biotechnology or chemical processing. For this reason, chromatography is one of the most valuable techniques for a wide range of scientific experiments and fields.
However, your experience with chromatography does not need to be tied to wearing a lab coat. Chromatography is applied in many contexts and careers, and it is especially well suited to ink technologies. Paper chromatography, or sheet chromatography, is useful for differentiating the types and colors of pigment used.