本文件规定了焊接烟尘分离设备的测试方法，以确定其分离效率是否符合规定要求。 规定的方法不适用于与拟使用的设备无关的滤芯测试。 本文件适用于出版后制造的设备。 注:一般通风系统不在ISO 21904-1的范围内。

This document specifies a method for testing equipment for the separation of welding fume in order to determine whether its separation efficiency meets specified requirements. The method specified does not apply to testing of filter cartridges independent of the equipment in which they are intended to be used. This document applies to equipment that is manufactured after its publication. NOTE General ventilation systems are excluded from the Scope of ISO 21904-1.