FIELD: gas chromatography. SUBSTANCE: column is formed by two bushings at least, which are mounted one into the other and conjugated conically. Single or several spiral-shaped grooves are formed onto one pair of adjacent surfaces at least. Solid or liquid sorbent is applied onto the walls of the grooves. Separate capillary grooves are connected together in series or in parallel. EFFECT: improved precision. 1 dwg
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