Preparation of steel substrates before application of paints and related products. Tests for the assessment of surface cleanliness. Part 9: Field method for the conductometric determination of water-soluble salts. (ISO 8502-9:1998)
涂料和相关产品使用前钢衬底的制备 表面清洁度评估试验 第9部分:水溶性盐电导测定的现场方法 (ISO 8502-9-1998)