ISO 793:1973 Preview
Aluminium and aluminium alloys -- Determination of iron -- Orthophenanthroline photometric method
This standard was last reviewed and confirmed* in 2017.
*Therefore this version remains current
The method is applicable to the determination of iron content between 0,05 and 2,5 % in aluminium and aluminium alloys. The method does not apply completely to unalloyed aluminium, aluminium-silicon alloys and any other aluminium alloy that is not easily attacked with hydrochloric acid (see annex A) and alloys containing copper, zinc and nickel (see annex B).