Calibration: Preparing and Introducing Thermal Desorption

When calibrating any piece of analytical equipment, it is important that the loading and analysis of standards replicates, as closely as possible, that of the samples themselves. For this reason a thermal desorption–gas chromatography (TD–GC) system should be calibrated by loading the standard onto a sample tube and desorbing it through the system, so that it is subjected to the complete two-stage thermal desorption process.