Paper Chromatography is an analytical chemistry technique.(Analytical chemistry is the study of the separation, identification, and quantification of the chemical components of natural and artificial materials).Chromatography paper has been very useful in uses of pH paper. When dipped in an indicator [solution], it will absorb the indicator well and when dries will be ready for use as pH paper. Chromatography paper will change color when exposed in acidic and basic solutions. Chromatography paper is so popular it is sold into the market, such as Whatman's Chromatography paper.