本实验室试验方法适用于空气过滤器，该过滤器通过降低驾驶室内环境空气和/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。试验方法提供了有关压降以及气体和/或蒸汽去除特性的信息。本试验方法的目的是描述和建立试验标准，以便在规定的实验室条件下，对过滤器和过滤器部件进行比较，以去除或降低气流中的安全壳气体或蒸汽水平。

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.