chro·mat·o·graph 
(krō-mătə-grăf′)
(krō-mătə-grăf′)n.
An instrument that produces a chromatogram.
tr.v. chro·mat·o·graphed, chro·mat·o·graph·ing, chro·mat·o·graphs
To separate and analyze by chromatography.
chro·mat′o·graphic adj.
chro·mat′o·graphi·cal·ly adv.