GB/T 5069.4-2001 Chemical analysis of magnesia and magnesia-alumina refractory materials--Ortho-phenanthroline photometric method for determination of iron oxide content (English Version)
This standard specifies the method for the photometric determination of the amount of iron oxide by o-phenanthrene. This standard is applicable to the determination of iron oxide content in magnesia, magnesium-aluminum (aluminum-magnesium) refractory raw materials and products, and the measurement range is 0.20% to 15.00%.
GB/T 5069.4-2001 history
2015GB/T 5069-2015 Chemical analysis of magnesia-alumina refractories
2007GB/T 5069-2007 Chemical analysis of magnesia-alumina refractories
2001GB/T 5069.4-2001 Chemical analysis of magnesia and magnesia-alumina refractory materials--Ortho-phenanthroline photometric method for determination of iron oxide content
GB/T 5069.4-2001 Chemical analysis of magnesia and magnesia-alumina refractory materials--Ortho-phenanthroline photometric method for determination of iron oxide content was changed to GB/T 5069-2007 Chemical analysis of magnesia-alumina refractories.