规定了无机化学品分析的三个等级的要求。不适用于有机痕量分析、表面活性剂分析和生物或医学分析。根据检查评估，材料应为无色透明液体。根据含量分类:不含溶解或胶体离子和有机污染物，极低的无机、有机或胶体污染物，适合实验室湿化学工作。规定pH值和电导率测量、可氧化物质和活性二氧化硅的极限测试、吸光度测量和在110°C下蒸发后残留物的测定。

Specifies the requirements for three grades for the analysis of inorganic chemicals. Not applicable to organic trace analysis, analysis of surface-active agents and biological or medical analysis. The material shall be a clear, colourless liquid as assessed by inspection. Classifies according to the content: free from dissolved or colloidal ionic and organic contaminants, very low inorganic, organic or colloidal contaminants and suitable for laboratory wet chemistry work. Specifies the pH and conductivity measurement, the limit tests for oxidizable matter and for reactive silica, the measurement of absorbance and the determination of residue after evaporation at 110 °C.