GB/T 5070.3-2002 Chemical analysis of magnesia chromite refractories--Part 3: Determination of iron oxide--O-phenanthroline photometric method (English Version)
This part of GB/T 5070 specifies the method for the photometric determination of the amount of iron oxide by o-phenanthrene. This part is applicable to the determination of the amount of iron oxide in magnesia-chromium refractories, and the determination range (mass fraction) is 1.00% to 10.00%.
GB/T 5070.3-2002 history
2015GB/T 5070-2015 Chemical analysis of refractories containing chrome
2007GB/T 5070-2007 Chemical analysis of refractories containing chrome
2002GB/T 5070.3-2002 Chemical analysis of magnesia chromite refractories--Part 3: Determination of iron oxide--O-phenanthroline photometric method
GB/T 5070.3-2002 Chemical analysis of magnesia chromite refractories--Part 3: Determination of iron oxide--O-phenanthroline photometric method was changed to GB/T 5070-2007 Chemical analysis of refractories containing chrome.