👉 In the context of chromatography, a "chromatogram" is a graphical representation that shows the separation or distribution of different substances in a liquid or gas phase. It typically includes information about the identity, concentration, and mass of each substance as well as its retention time on a specific column. The term "chromatic" refers to the coloration of the chromatograms, which can be due to variations in the solubility, molecular size, or other properties of the substances.