A capillary gas chromatographic inlet for the analysis of trace concentrations of compounds. 
An important consideration in glass capillary column gas chromatography is the choice of the best sample inlet system for either splitting or splitless injection.  This paper describes a simple direct glass-lined inlet, and describes its advantages over conventional split and splitless injection systems for trace component analysis.  Several analyses are described which illustrate the superiority of the new direct inlet for these applications.  The design of the new direct inlet system is such that column efficiency is not impaired and is equivalent to that of split injections.