该方法描述了测定纸张和纸板平衡相对湿度的程序。 只要保持这种状态，在特定相对湿度和温度下尺寸稳定的纸张将保持不变。打印机和纸张转换器可以保持特定的湿度和湿度 温度条件比它们更容易调节纸张的含水量，以适应其环境的变化。因此，在许多情况下，在特定温度下的平衡相对湿度比纸张的含水量更重要。

This method describes procedures for determining the equilibrium relative humidity of paper and paperboard. Paper which is dimensionally stable at a particular relative humidity and temperature will remain unchanged as long as this condition is maintained. Printers and paper converters can maintain a particular humidity and temperature condition more easily than they can regulate the moisture content of the paper to adjust for a change in its environment. Hence, for many purposes equilibrium relative humidity at a specified temperature is more significant than the moisture content of the paper.