Capillary electrophoresis:

In capillary electrophoresis, a buffer filled capillary tube is used. The tube extends between two buffer reservoirs that also holds the platinum electrodes. The sample is introduced at one end and a dc potential is applied. The separated analytes are observed by a detector at the other end.

The simplest form of electrochromatography is by fusion of electrophoresis and paper chromatography. The sheet of paper is commonly suspended vertically along with the solvent (buffer) descending from the top. An electric field is applied horizontally along the sides of paper. A capillary electrochromatography is a more complicated version of the paper electrochromatography. That is a hybrid of capillary electrophoresis and HPLC and offers a few of the benefits of the two techniques.