NF B49-424-2*NF EN ISO 21079-2:2008 含有氧化铝、氧化锆和硅石的耐火材料的化学分析 含有5%~45%ZrO2的耐火材料(可选择X射线荧光方法)第2部分:湿化学分析
Chemical analysis of refractories containing alumina, zirconia, and silica - Refractories containing 5 % to 45 % of ZrO2 (alternative to the X-ray fluorescence method) - Part 2 : Wet chemical analysis