Patent ID: 6395560
Filing Date: 2002-05-28
Classification: G01N,Y10T

Abstract:
A method comprising the steps of:(a) placing a non-vapor phase of a substance for analysis in an interior area of a vial; (b) sealing the interior area of the vial with a septum; (c) generating a vapor phase of the substance in a headspace of the interior area; (d) extending at least one sample needle through the septum, wherein the at least one sample needle includes a first fluid passage and a second fluid passage separate from the first fluid passage extending therethrough, and wherein the first fluid passage includes a first opening located in the headspace and the second fluid passage includes a second opening in the headspace; (e) introducing a gas into the headspace through the first fluid passage; (f) removing a sample of the vapor phase of the substance from the headspace through the second fluid passage.