Process for the production of capillary columns chromatographic siliceous flexible and apparatus for implementing it.

摘要

A tube made of glass fibers is treated by leaching in hydrofluoric acid or nitric acid, in the flame repolished oxyhydrogen and pulls on the temperature of 1800 has 2100c in a capillary tube having a precise diameter, using a measuring device of the shielding without touching the inside diameter, connected to a regulator of advance of the tube in the furnace, while maintaining an inert atmosphere within the tube and of the capillary. On the packaging wrapper dimension of the capillary is a layer of lacquer polyimide or polyesterimidique with the aid of a nozzle soft rubber silicone and this varnish is hardened by using a temperature progressively increased. / p & & p & the application of a stationary phase on the inside dimension of the capillary tube is effected by the winding of the capillary tube 5 in the thermostat 1 is heated at a temperature of 150 has 250c, by means of a solution of a stationary phase.