标准摘要
[中文适用范围]： 第三版取消并取代了第二版 (ISO 312-1980)，并对第二版进行了较小的修订。 规定了原理、试剂、仪器、样品、程序和结果的表达。 附图给出了装置的示例。 [外文原描述]： This third edition cancels and replaces the second edition (ISO 312-1980), of which it constitutes a minor revision. Specifies principle, reagents, apparatus, sample, procedure and expression of results. A figure gives an example of apparatus.
英文名称Manganese ores — Determination of active oxygen content, expressed as manganese dioxide — Titrimetric method