Preparation of steel substrates before application of paints and related products - Tests for the assessment of surface cleanliness - Part 12: Field method for the titrimetric determination of water-soluble ferrous ions (ISO 8502-12:2003)
涂料和有关产品使用前钢衬底的制备表面清洁度评定试验第12部分:水溶性亚铁离子滴定测定的现场方法