LST EN ISO 8502-9:2020 涂漆和相关产品前钢基材的制备 表面清洁度评估试验 第9部分:水溶性盐类电导测定的现场方法(ISO 8502-9:2020)
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 8502-9:2020)