DIN 52240-7-1994 玻璃生产用原料的检验.碳酸钙最低含量为 95% 的石灰石的化学分析.第7部分:按氧化锰计算方法对锰含量的测定
Testing of raw materials for the production of glass; chemical analysis of limestone with a minimum content of 95% calcium carbonate; determination of manganese content calculated as MnO
This document specifies the photometric determination and the determination by flame atomic absorption spectrometry of the manganese content of limestone with a minimum content of 95% calcium carbonate.