Patent ID: 6167767
Filing Date: 2001-01-02
Classification: G01N

Abstract:
A gas sampling system comprising: a plurality of sample tubes, each said tube containing a solid collector material, the ends of each said tube having a vacuum tight end closure, each said end closure having a pierceable septum; a magazine arranged to store said plurality of sample tubes and having means to sequentially move individual sample tubes into and out of a sampling location; and a sample trapping module having a port arranged to accept entry of said magazine, said port having means to make mechanical and electrical connection with said magazine when the magazine is seated in the port, said trapping module having a pair of hollow bore needles spaced apart on the same axis, the points of said needles facing each other, the needles arranged to move back and forth along said axis, and to penetrate through and withdraw from the end cap septa of a sample tube when said tube is at said sampling location.