GB/T 1507-1979 in English

《GB/T 1507-1979锰矿石中有效氧量的测定》由TC183（全国钢标准化技术委员会）归口，主管部门为中国钢铁工业协会。

Scope

In addition to the implementation of the general rules and general provisions in accordance with GB1467-78, the following provisions are supplemented according to the characteristics of manganese ore: If there are two methods listed for the same element and the same range, if disputes arise due to different methods used in the arbitration analysis, the first method shall be used to analyze the results prevail. During the analysis, always weigh the air-dried sample; weigh the sample at the same time as the measurement to determine the percentage of wet water (A). When calculating the analysis element result, the obtained result (percent content) should be multiplied by the conversion factor (K), which is the percentage content of the analyzed element (component) in the completely dry sample. Conversion factor (K) = 100/100-A The particle size of the sample needs to pass 150-200 mesh.