BS EN ISO 8502-9:2020
在涂覆油漆和相关产品之前准备钢基材 表面清洁度评估试验 水溶性盐电导测定的现场方法
Preparation of steel substrates before application of paints and related products. Tests for the assessment of surface cleanliness - Field method for the conductometric determination of water-soluble salts