Method, device and apparatus to detect changes of state in a capillary and to optimize injection conditions of a sample into gas-chromatography apparatuses

摘要

This invention concerns a method, a device, and an apparatus to detect changes of state in a capillary tube, in particular a gas-chromatographic column or pre-column and to consequently control the conditions under which samples are injected or introduced. The detection is carried out through changes in the temperature of the capillary tube, and/or changes in pressure, or flow rate of the carrier gas.The invention further concerns a method to control gas-chromatography functions by means of a specially designed software, based on the above-mentioned detections on a sample apparatus.