本欧洲标准适用于通风和空调以及技术过程领域中使用的高效颗粒空气过滤器（EPA），高效颗粒空气过滤器（HEPA）和超低渗透空气过滤器（ULPA）。用于洁净室技术或制药行业的应用。 它建立了一种基于使用液体测试气溶胶的颗粒计数方法来确定效率的程序，并且允许这些过滤器在其效率方面的标准化分类。 EN 1822系列的这一部分涉及测量过滤器元件的效率，指定进行试验的条件和程序，描述试样测试装置及其部件，并包括评估试验结果的方法

This European Standard applies to efficient particulate air filters (EPA), high efficiency particulate air filters (HEPA) and ultra low penetration air filters (ULPA) used in the field of ventilation and air conditioning and for technical processes, e.g. for applications in clean room technology or pharmaceutical industry. It establishes a procedure for the determination of the efficiency on the basis of a particle counting method using a liquid test aerosol, and allows a standardized classification of these filters in terms of their efficiency. This part of the EN 1822 series deals with measuring the efficiency of filter elements, specifying the conditions and procedures for carrying out tests, describing a specimen test apparatus and its components, and including the method for evaluating test results.