The indoor environment requires more and more control of gaseous pollutants, in both civil and industrial buildings. Therefore, the testing method and performance data of the gaseous pollutant purification device (chemical filter) are necessary. This study compared the purification performance of different filter for toluene removal based on laboratory experimental data, and analyzed the influence of concentration on its performance. For the initial efficiency, concentration has no much influence within the test concentration range; for capacity test, testing concentration has great influence on the test duration therefore a reasonable testing concentration should be chosen. Suggestions for the implementation of the testing method and filter manufacturing process are provided.