This standard specifies methods for the determination of lead content in pyrite and sulphur concentrates, including flame atomic absorption spectroscopy (AAS) and EDTA volumetric method. The flame atomic absorption spectroscopy (AAS) method is suitable for the determination of lead content between 0.01% and 1%, while the EDTA volumetric method is suitable for samples with lead content greater than 0.1%. The standard describes in detail the determination procedures and reagent requirements to ensure the accuracy and conformity of the test results, providing an effective analytical method for the detection of lead content in mineral products.