描述了三种方法:方法I和II是重量分析法，适用于硫含量大于0.01%（m/m）的锰矿石，方法III是滴定法。应结合ISO 4297阅读。规定了原理、试剂、仪器、样品、程序和结果表达。图示为根据方法III测定硫含量的装置。

Describes three methods: methods I and II are gravimetric methods which are applicable to maganese ores having sulphur contents greater than 0.01 % (m/m), and method III is a titrimetric method. Should be read in conjunction with ISO 4297. Specifies principle, reagents, apparatus, sample, procedure and expression of results. A figure illustrates the apparatus for determination of sulphur content in accordance with method III.