本文件规定了一种从表面提取水溶性污染物的方法，该方法使用可附着在任何表面上的胶布或套筒形式的柔性电池，而不论其形状（扁平或弯曲）和方向（朝任何方向，包括向下）。所述方法适用于在涂漆或类似处理之前确定水溶性污染物存在的现场使用。本文件不包括已溶解污染物的后续分析。适用于现场使用的分析方法见ISO 8502的其他部分。注:提取方法可能会产生假阴性或不将所有水溶性材料从表面去除，因为:a）隐藏在缝隙或金属褶皱下的可溶性材料；b）腐蚀层下的可溶性材料，由缓蚀剂、油、油脂或其他非-可见薄膜。

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.