This standard specifies the X-ray fluorescence spectrometry method for the determination of silicon, aluminum, calcium, iron, phosphorus, chromium and titanium in exported rare earth magnesium ferrosilicon. This standard is applicable to the determination of silicon, aluminum, calcium, iron, phosphorus, chromium and titanium content in rare earth magnesium ferrosilicon. The measurement range of each element is shown in Table 1. Table 1 Scope of application (omitted)