GB/T 18570.12-2008
涂覆涂料前鋼材表面處理.表面清潔度的評定試驗.第12部分:水溶性鐵離子的現場滴定測定法
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
GBT18570.12-2008, GB18570.12-2008