SEPARATION-COLUMN UNIT FOR A GAS-CHROMATOGRAPH AND METHOD FOR MAKING THE SAME

摘要

The present invention relates to a separation-column unit that comprises a support plate having, for example, a spiral trough formed on one of its sides as well as a cover plate arranged so as to be adjacent to said side. According to the present invention and in order to obtain a high-yield separation as well as a high loading capacity concerning the amount of flowing sample, the depth (d) of the trough (3) is preferably at least three times larger than the width (b) thereof. The bottom (17) of the trough (3) preferably has a rounded cross-section, and the cover plate (7) may include a corresponding groove (18).