标准摘要
[中文适用范围]： 方法一适用于铬含量小于0.1%（m/m）的锰矿石，方法二适用于铬含量大于0.1%（m/m）的锰矿石。 第二版取消并取代第一版（即ISO 619-1975）。 应结合 ISO 4297 一起阅读。 [外文原描述]： Method I is applicable to manganese ores having chromium contents less than 0.1 % (m/m), method II is applicable to manganese ores having chromium contents greater than 0.1 % (m/m). This second edition cancels and replaces the first edition (i.e. ISO 619-1975). Should be read in conjunction with ISO 4297.
英文名称Manganese ores — Determination of chromium content — Diphenylcarbazide photometric method and silver persulphate titrimetric method