该实验室测试方法适用于通过降低车辆驾驶室中环境和/或再循环空气中的气体、气味或有害成分的浓度来改善空气质量的空气过滤器。测试方法提供了关于压降以及气体和/或蒸汽去除特性的信息。 试验方法的目的是描述和建立试验标准，以便能够比较在规定的实验室条件下从气流中去除或降低密封气体或蒸汽水平的过滤器和过滤器组件。

This laboratory test method applies to air filters that improve air quality by reducing concentrations of gaseous, odorous, or hazardous components from ambient and/or re-circulated air in vehicle cabins. The test method provides information on pressure drop, as well as gas and/or vapor removal characteristics. The purpose of the test method is to describe and establish test criteria to enable comparisons of filters and filter components that remove or reduce the levels of containment gases or vapors from air streams under specified laboratory conditions.