ISO 10121-2:2013旨在提供一种客观的测试方法，以评估任何全尺寸气体过滤装置（GPACD）在一般过滤中的性能，而不考虑装置中使用的介质或技术。事实上，ISO 10121这一部分的目标是避免将测试数据与内部参数联系在一起。这种方法的好处是，GPACD的客户将能够专注于价格/性能，供应商将能够获得规范和客观的测试标准，该标准不需要发布专有信息或对产品进行逆向工程。 为确保测试设备供应商的客观性，未规定测试设备的具体设计。相反，规定了设备性能和验证测试的要求。然而，概述了当前使用的不同设计示例。ISO 10121-2:2013也可以与洗涤器、吸收器、非吸附装置或填充柱等技术一起使用，只要它们适合测试设备，可以通过测试方法进行有意义的判断，并且适用于住宅和非住宅的一般通风应用。 核和军事应用被明确排除在外。

ISO 10121-2:2013 aims to provide an objective test method to estimate the performance of any full size gas filtration device (GPACD) for general filtration regardless of media or technique used in the device. In fact, the goal of this part of ISO 10121 is to avoid relating the test data to internal parameters altogether. The benefit with this approach is that customers of GPACDs will be able to concentrate on price/performance and suppliers will have access to a normative and objective test standard that will not require the release of proprietary information or reverse engineering of the product. To ensure objectivity for test equipment suppliers, no specific design of the test apparatus is specified. Instead requirements of apparatus properties and validation tests are specified. However, different design examples in present use are outlined. ISO 10121-2:2013 can also be used with technologies such as scrubbers, absorbers, non-sorptive devices or packed columns as long as they fit into the test apparatus, can be meaningfully judged by the test method and are intended for general ventilation applications, both residential and non residential. Nuclear and military applications are specifically excluded.