本英国标准规定了带有罩的空气净化装置的要求 仅在紧急响应人员（如火灾、救护车、警察）逃生时使用 以及来自化学、生物、放射性和核污染地区的成年平民 （CBRN）代理。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This British Standard specifies the requirements for air-purifying devices incorporating a hood intended to be used only during escape by emergency responders (e.g. fire, ambulance, police) and adult civilians from areas contaminated by chemical, biological, radiological and nuclear (CBRN) agents.All current amendments available at time of purchase are included with the purchase of this document.