本文档规定了电源过滤呼吸防护装置（RPD）的最低要求，其包含松散的呼吸接口（RI）。它不包括设计用于存在或可能是氧气缺乏（氧浓度低于17％的体积分数）的情况下的设备。 Escape RPD不在本文档中。 包括实验室和实际性能测试，用于评估是否符合要求

This document specifies minimum requirements for powered filtering Respiratory Protective Devices (RPD) incorporating a loose fitting respiratory interface (RI). It does not cover devices designed for use in circumstances where there is or might be an oxygen deficiency. Escape RPD and filters for use against CO are not covered by this document. Laboratory and practical performance tests are included for the assessment of compliance with the requirements.