This standard specifies methods for the determination of zinc content in pyrite and sulphur concentrates, including flame atomic absorption spectroscopy (AAS) and Spectrophotometric method, spectrophotometry. The flame atomic absorption spectroscopy (AAS) method is suitable for the determination of zinc content between 0.01% and 1%, while the Spectrophotometric method, spectrophotometry is suitable for the determination of zinc content between 0.01% and 0.3%. The standard details the preparation of the sample, the preparation of reagents and solutions, and the specific determination procedures, providing a scientific method for the detection of zinc content in mineral products.