PROBLEM TO BE SOLVED: To provide a sampler which can reduce a measurement error as far as possible.;SOLUTION: The sampler 10 for a substance to be collected in the air is provided with a cylindrical sampler mainframe 12 which is constituted of a blank capable of being permeated by the substance to be collected, an adsorbent 14 which is housed at the inside of the mainframe 12 and which can adsorb the substance to be collected, filter members 16 which are installed at both outer end sides of the adsorbent 14 at the inside of the mainframe 12 and stopper members 18 which prevent the filter members 16 form being separated and removed from the sampler mainframe 12. The filter members 16 are constituted of a blank capable of being permeated by the substance to be collected and its solvent, the stopper members 18 are provided with base members 18A which comprise holes 22 communicating with the inside of the sampler mainframe 12 and lid members 18B which can open and close the holes 22.;COPYRIGHT: (C)2003,JPO
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