ISO 8502-9:1998 涂装油漆和有关产品前钢材预处理 表面清洁度的评定试验 第9部分:水溶性盐的现场电导测定法
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