本文件规定了在选择自然风化类型和自然风化程序时应考虑的条件，以确定涂层或涂层系统的耐候性（直接风化或车窗玻璃后的风化）。 自然风化用于确定涂层或涂层系统（本文件中用涂层表示）对太阳辐射和大气的耐受性。 本文件未考虑特殊的大气影响，例如工业污染。

This document specifies the conditions to take into consideration when selecting the type of natural weathering and the natural weathering procedure to determine the resistance of coatings or coating systems (direct weathering or weathering behind window glass). Natural weathering is used to determine the resistance of coatings or coating systems (denoted in this document by coatings) to the sun's radiation and the atmosphere. This document does not take into account special atmospheric influences, e.g. industrial pollution.