ISO 18894:2018规定了用于测定高温下二氧化碳气体中块状焦炭（标称顶部尺寸>；20 mm）反应性的设备和技术，以及通过在圆柱形腔室中翻滚测定其在二氧化碳气体中反应后的强度。 主要应用于炼铁高炉用焦炭的测试（CRI~<；33，CSR~>；55）。本标准也适用于其他类型的焦炭（如铸造焦炭），但精度有限。非炼铁高炉用焦炭的应用超出了本文件的范围。

ISO 18894:2018 specifies the equipment and techniques used for determining lump-coke (nominal top size >20 mm) reactivity in carbon dioxide gas at elevated temperatures and its strength after reaction in carbon dioxide gas by tumbling in a cylindrical chamber. Main application is the testing of coke to be used in iron making blast furnaces (CRI~ < 33, CSR~ > 55). This standard can also be applied to other coke types (e.g. foundry coke), but limited precision is to be expected. Application to coke for non-iron making blast furnaces is beyond the scope of this document.