本文件规定了呼吸防护装置（RPD）的性能和测试的一般要求，这些防护装置应按照其分类进行，并用于工作场所，以保护佩戴者免受危险大气和/或环境的影响。 这些要求基于人为因素，适用于完整的呼吸系统。 还包括RPD制造商提供的标记和信息要求。 ISO 17420规定了消防、海事、采矿、喷砂、焊接和逃生以及RN（放射性、核）、CBRN（化学、生物、放射性、核）和CBRN逃生RPD等特殊应用的附加要求- 5至ISO 17420-9。 本文件不适用于以下呼吸设备: -水下潜水应用； -军事应用； -用于飞机和航天器； -医疗生命支持应用； -复苏器。

This document specifies general requirements for the performance and testing of respiratory protective devices (RPD) in accordance with their classification and for use in the workplace to protect the wearer from hazardous atmospheres and/or environments. The requirements are based on human factors and are for complete respiratory systems. Requirements for marking and information supplied by the RPD manufacturer are also included. Additional requirements for special application such as fire services, marine, mining, abrasive blasting, welding and escape as well as RN (Radiological, Nuclear), CBRN (Chemical, Biological, Radiological, Nuclear) and CBRN Escape RPD are addressed in ISO 17420-5 to ISO 17420-9. This document does not apply to respiratory devices for: — underwater diving application; — military application; — use in aircraft and spacecraft; — medical life support applications; — resuscitators.