本文件规定了分别使用这两种方法对cupro和lyocell进行定性分析 -基于ISO 20705应用的扫描电子显微镜（SEM）方法，以及 -光谱分析法。 这些测试方法仅适用于cupro和lyocell或这些混合物。如果存在其他纤维，则使用ISO/TR 11827的试验方法对其进行识别，并使用ISO 1833系列的相关部分去除。 该方法不适用于在加工过程中受损的纤维表面（例如:。 g、 化学的或物理的）。

This document specifies the qualitative analysis for cupro and lyocell using the two methods separately — scanning electron microscope (SEM) method based on the application of ISO 20705, and — spectral analysis method. These testing methods are applied only for cupro and lyocell, or those blends. If other fibres are present, those are identified using the test method of ISO/TR 11827 and removed using the relevant part of the ISO 1833 series. This method is not applicable for the fibre surface that is damaged during the process (e.g. chemically or physically).