制定技术原则，这些原则将全面用于未来的标准化 各种基质（特别是水、土壤、， 堆肥、污水污泥、生物群）。这包括以下内容: -实验室内必要工作条件的说明 -现场必要工作条件的说明 -安全说明 -需考虑的尺寸等级协调建议 -协调成果表示的建议 -关于结果代表性的矩阵特殊性的注释

This document describes the principles to be followed in the analysis of microplastics in various environmental matrices. This includes the unique particle size classification of plastics, the use of certain apparatus with regard to sampling, sample preparation, and the determination of representative sample quantities. The purpose of this document is to specify minimum requirements until specific standards for the different case situations are available. This is important to ensure that the development of the specific standards is done on a consistent basis to ensure that comparison or correlation of results is possible. This document does not include requirements for monitoring actions.