Resumen
Specifies two methods applicable to Zn 99,995, Zn 99,99, Zn 99,95, Zn 99,5 and Zn 98,5. The first method is suitable for the determination of copper contents between 0,0005 and 0,005 %. The second method applies to copper contents between 0,0025 and 0,1 %.