Chromatography
Thin layer chromatography (TLC) is a common laboratory technique similar to paper chromatography. Instead of a stationary phase of paper, it uses a  thin layer of adsorbent like silica gel, alumina, or cellulose on a flat substrate. Compared to paper, it has the advantage of faster runs, better separations, and the choice between different adsorbents. For even better resolution and to allow for quantification, high-performance TLC can be used.