本文件给出了一些方程式，这些方程式允许将与煤和焦炭有关的分析数据表达在 常用的各种不同的碱基。考虑了可适用于以下情况的更正: 在计算其他基准之前，煤炭的某些确定值。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document gives equations that allow analytical data relating to coal and coke to be expressed on the various different bases in common use. Consideration is given to corrections that can be applied to certain determined values for coal prior to their calculation to other bases.All current amendments available at time of purchase are included with the purchase of this document.