GB/T 6609.34 - 2009 stipulates the calculation method of aluminum oxide trioxide content. It is based on Miscellaneous chemical analysis and physical performance measurement results, and defines a series of calculation formulas and calculation steps. It covers the integrated application of the measurement data of each component, considering the influence of impurities and other factors on the results. Following this standard, the content of aluminum oxide trioxide in aluminum oxide can be accurately calculated based on the existing analytical data. This provides a key basis for aluminum oxide manufacturers in mass control, product grading and cost accounting, and helps to improve production efficiency and product mass.