This standard describes a method for determining the zinc content in lead using the atomic absorption technique. The method is applicable to zinc contents between 0.0001 and 0.001% by mass. The method can be easily applied to zinc contents greater than 0.001% by mass by appropriate dilution of the solution corresponding to the test sample (see 6.1). In any case, it is important that the solutions to be analyzed and the solutions corresponding to the calibration terms are under similar conditions of acidity, lead concentration, etc.