The two general methods which are used for improving the resolution of two substances on a chromatographic column should be named.
A chromatographic column is a tube of plastic or glass that is placed vertically.
The column contains the stationary phase and only allows the mobile phase to pass through. Chromatography involves dissolving a sample in mobile phase. This phase is then made to pass through a stationary phase. Chromatogram refers to the representation of the separation that occurs chemically.
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