For 10 points, name this lab technique in which a mobile phase passes through a stationary phase, from the Greek for "color writing."
A Van Deemter plot is used to determine the minimum theoretical plate height necessary to perform this procedure. One type of this procedure often uses agarose as an "affinity matrix", while proteins are separated by charge in the "ion exchange" variety of it. Forensic analysis of gel pens is one application of the "high-performance-liquid" type of this procedure, which also comes in thin-layer, gas, and paper varieties. For 10 points, name this lab technique in which a mobile phase passes through a stationary phase, from the Greek for "color writing."
A Van Deemter plot is used to determine the minimum theoretical plate height necessary to perform this procedure.
{chromatography} [accept {column chromatography} before “{affinity}”]