本文件规定了比较LED（发光二极管）和白光测量的火灾试验期间烟雾密度和烟雾产生率的方法。这些方法旨在识别可用作白光源替代品的合适LED。

This document specifies methodologies for comparing the smoke density and the smoke production rate during fire tests measured by LED (light-emitting diode) with those measured by white light. These methodologies are intended for the identification of suitable LEDs which can be used as alternatives to white light sources.