ISO 5659-2:2017规定了测量材料或复合材料试样暴露表面产生烟雾的方法。本标准适用于表面基本平坦且厚度不超过25 mm的试样，该试样以水平方向放置，并在封闭柜中经受规定水平的热辐照度，无论是否使用引燃火焰。本试验方法适用于所有塑料。 本试验确定的光密度值应视为特定于试样或组件材料的测试形式和厚度，不应视为固有的基本特性。 该测试主要用于建筑物、火车、船舶等的研发和消防安全工程，而不是作为建筑规范或其他目的的评级依据。没有提供预测材料在其他（实际）暴露条件下暴露于热和火焰时可能产生的烟雾密度的依据。本试验程序不包括刺激物对眼睛的影响。

ISO 5659-2:2017 specifies a method of measuring smoke production from the exposed surface of specimens of materials or composites. It is applicable to specimens that have an essentially flat surface and do not exceed 25 mm in thickness when placed in a horizontal orientation and subjected to specified levels of thermal irradiance in a closed cabinet with or without the application of a pilot flame. This method of test is applicable to all plastics. It is intended that the values of optical density determined by this test be taken as specific to the specimen or assembly material in the form and thickness tested and are not to be considered inherent, fundamental properties. The test is intended primarily for use in research and development and fire safety engineering in buildings, trains, ships, etc. and not as a basis for ratings for building codes or other purposes. No basis is provided for predicting the density of smoke that can be generated by the materials upon exposure to heat and flame under other (actual) exposure conditions. This test procedure excludes the effect of irritants on the eye.