本文件规定了一种使用柔性电池从表面提取水溶性污染物进行分析的方法，其形式为粘合剂贴片或套筒，可以附着在任何表面上，而不管其形状（平面或曲线）及其方向（朝向任何方向，包括向下）。 所述方法适用于现场，以在涂漆或类似处理之前确定水溶性污染物的存在。 本文件不包括已溶解污染物的后续分析。ISO 8502的其他部分描述了适合现场使用的分析方法。 注:提取方法可能会产生假阴性，或不会将所有水溶性材料从表面上去除，因为:a）可溶性材料隐藏在裂缝或金属褶皱下； b） 腐蚀层下的可溶物质，由腐蚀抑制剂、油、油脂或其他不可见薄膜产生的钝化层。

This document specifies a method of extracting, for analysis, water soluble contaminants from a surface by use of flexible cells in the form of adhesive patches or sleeves which can be attached to any surface, regardless of its shape (flat or curved) and its orientation (facing in any direction, including downwards). The method described is suitable for use in the field to determine the presence of water soluble contaminants before painting or a similar treatment. This document does not cover the subsequent analysis of the contaminants that have been dissolved. Methods of analysis suitable for field use are described in other parts of ISO 8502. NOTE The extraction method might give a false negative or not take all the water-soluble material off the surface because of: a) Soluble materials hiding in the crevices or under folds of metal; b) Soluble materials under corrosion layers, passivation layers produced by corrosion inhibitors, oil, grease, or other non-visible thin films.