优点: 产品概述: EM-2069是为提升用户进行二氧化硫、氮氧化物、硫化氢等24小时采样的科学性和准确性的自助式采样组合套件。可以实现zei多8种因子的持续恒温采样。 EM-2069 is a combination of self-sampling.it will be help user to enhance the accuracy and scientific@ 24h continuous sampling of sulfur dioxide、nitrogenoxiodes、hydrogen sulfide…etc