| 摘要 |
A chromatographic column is manufactured in the form of a tube having a core of uniform cross-section which contacts the tube wall at two or more points forming separate longitudinal passages in the column. The cross-section of the core can be polygonal or star-shaped and the core can be drawn into the tube by means of a draw-wire. The core surface constitutes, or is coated with, a partitioning agent and the surface can be roughened. The core and tube can be made of stainless steel or thermoplastics. |
