COLLECTING TUBE AND FILTER USED THEREFOR

PROBLEM TO BE SOLVED: To provide a collecting tube capable of recovering sufficiently a collected agent adsorbed onto an adsorbent even when a solvent is injected at high speed, and a filter used therefor. SOLUTION: This collecting tube is equipped with an adsorbent storage chamber 10b for storing the adsorbent 16; an inflow port 22 through which gas can flow into the adsorbent storage chamber 10b; an outflow port 20 formed on a position facing to the inflow port 22, through which the gas in the adsorbent storage chamber 10b can flow out; and the filter 14 provided on a position of the outflow port 20 in the adsorbent storage chamber 10b, impassable by the adsorbent 16. The collecting tube has a characteristic wherein the position of the outflow port 20 of the filter 14 is projected toward the inflow port 22. COPYRIGHT: (C)2008,JPO&INPIT