#chromatography  a process used for separating mixtures by virtue of differences in absorbency
  supertype:  natural_process__naturalproces__natural_action__naturalaction__action__activity  a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
  subtype:  column_chromatography  chromatography that uses selective adsorption by a column of powders
  subtype:  paper_chromatography__paperchromatography  chromatography that uses selective adsorption on a strip of paper

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