Home / Standards / GB/T 223.45-94 GB/T 223.45-94 Steel and alloy—Determination of magnesium content by copper reagent separation-xylidyl blue II photometric method 钢铁及合金化学分析方法 铜试剂分离-二甲苯胺蓝II光度法测定镁量 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A