Packed versus capillary columns in gaschromatography

Three basic types of columns are currently in use: 1. (a) packed columns 2. (b) open hole tubular columns 3. (c) packed capillary columns A survey of the more important column characteristics is given in an attempt to clarify the confusion which still exists in comparing performance of columns of different design. Columntypes are compared in steroidanalysis. Micropacked columns prepared according to a new technique compare favourably with other types of columns e.g. open hole tubular (Golay) columns