Standard Code | Standard Title | Standard Class | Order |
---|---|---|---|
GB/T 223.50-1994 |
Methods for chemical analysis of iron,steel and alloy--The phenylfluorone-CTMAB direct photometric method for the determination of tin content 钢铁及合金化学分析方法 苯基荧光酮-溴化十六烷基三甲基胺直接光度法测定锡量 |
China National Standards CTMAB |
English PDF |
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