ISO 20565-1:2008
含铬耐火材料产品和含铬原材料的化学分析(可选择X射线荧光法).第1部分:装置、试剂、重量分析硅石的溶解和测定
Chemical analysis of chrome-bearing refractory products and chrome-bearing raw materials (alternative to the X-ray fluorescence method) - Part 1: Apparatus, reagents, dissolution and determination of gravimetric silica