H41;G13 标准查询与下载

NF T20-219:1987 铝生产用伯氧化铝.用吸氮法测定比表面积.单点法

Aluminium oxide primarily used for the production of aluminium. Determination of specific surface area by nitrogen adsorption. Single-point method.

NF T20-200:1973 铝生产用伯氧化铝.取样

Aluminium oxide primarily used for the production of aluminium. Sampling.

NF T20-202:1973 铝生产用伯氧化铝.分析用溶液的制备

Aluminium oxide primarily used for the production of aluminium. Preparation of solution for analysis.

NF T20-203:1973 铝生产用伯氧化铝.300℃下质量损失的测定(常规湿度)

Aluminium oxide primarily used for the production of aluminium. Determination of loss of mass at 300 degrees C (conventional moisture).

NF T20-204:1973 铝生产用伯氧化铝.1000℃和1200℃下质量损失的测定

Aluminium oxide primarily used for the production of aluminium. Determination of loss of mass at 1000 degrees C at 1200 degrees C.

NF T20-205:1973 铝生产用伯氧化铝.铁含量的测定.1.10-菲绕啉分光光度法

Aluminium oxide primarily used for the production of aluminium. Determination of iron. 1.10-phenanthroline photometric method.

NF T20-206:1973 铝生产用伯氧化铝.二氧化硅含量的测定.硅钼铬合成物还原分光光度法

Aluminium oxide primarily used for the production of aluminium. Determination of silica. Spectrophotometric method as the reduced silicomolybdate complex.

NF T20-208:1973 铝生产用伯氧化铝.钠的测定.火焰分光光度法(发射)

Aluminium oxide primarily used for the production of aluminium. Determination of sodium. Flame spectrophotometric method (emission).

NF T20-209:1973 铝生产用伯氧化铝.钒的测定.N - 苯酰 - N - 苯基 - 羟胺分光光度法

Aluminium oxide primarily used for the production of aluminium. Determination of vanadium. N-benzoyl-n-phenyl-hydroxylamine photometric method.