Gas chromatography inlet liner having a colored region

摘要

A liner for mixing the sample gas and a carrier gas and delivering the gas mixture to the inlet end of a capillary tube of a gas chromatograph for analysis, comprises (a) a transparent tube having an inlet and an outlet and a bore with an inside surface, and (b) at least one glass subcomponent permanently affixed to the liner tube wherein the subcomponent is at least one color.