加热和冷却的高成本刺激了当前减少补充空气和增加占用空间内空气再循环的努力，为了保持空气质量，必须清除室内产生的污染物。为了帮助暖通空调工程师设计气体污染物去除系统，决定开发一种用于评估气体污染物去除装置的标准化试验方法。

The high cost of heating and cooling stimulates current efforts to reduce makeup air and increase recirculation of air in occupied spaces, in order to preserve air quality, contaminants generated indoors must be removed.To assist HVAC engineers in design of gaseous contaminant removal systems, it was decided to develop a standardized test method for evaluation of gaseous contaminant removal devices.