Flexible capillary chromatographic column.

摘要

The present invention is directed to a method and apparatus for fabricating a flexible capillary chromatographic column, which includes the steps of supplying a rigid glass tube (10), feeding the tube into a drawing machine (10) and drawing the tube until it has capillary dimensions and is flexible, heating the so drawn capillary to its annealing temperature, and maintaining the tube at its annealing temperature until it is substantially completely free of fissures. In this way, external coatings normally applied for purposes of protecting against propagation of microfissures are unnecessary.