Device for split and splitless sampling onto capillary columns using a syringe

摘要

An apparatus for conducting split sampling gas chromatography of a liquid sample comprisingPPa vaporization chamber to receive a needle of a syringe,PPa first tube to receive the needle,PPa second tube directly adjacent the first tube and running substantially along the entire length of the first tube, the second tube accommodating a downward flow of cooling gas,P Pa third tube surrounding the first tube and the second tube, thereby creating a annular space between the third tube and the first tube, the annular space accommodating an upward flow of gas exiting the third tube.