Aluminium et alliages d'aluminium — Dosage du cuivre — Méthode photométrique à l'oxalyldihydrazide

The method is applicable to the determination of copper content between 0,002 and 0,8 % (m/m) in magnesium and magnesium alloys. The method is not completely applicable in the special case of alloys with silicon contents exceeding 1 % (m/m), for which it should be modified as desribed in the annex.