规定了确定纸张、纸板和纸浆纤维配料分析中使用的纤维重量因数的两种方法:通过与参考纸浆（仅包含一种明确定义的纤维的任何纸浆-机械浆和打浆不合适，且其重量因数已知）的比较，或通过计算纤维粗度。该方法适用于来自未混合木材种类的各种纸浆纤维，其不含超过5%的其他重量因子基本不同的纤维。

Specifies two methods for determining the weight factor of fibres used in the fibre furnish analysis of paper, board and pulp: by comparison with a reference pulp (any pulp that contains only one type of well-defined fibre - mechanical pulps and beaten pulps are unsuitable, and whose weight factor is known) or by calculating from the fibre coarseness. The methods are applicable to all kinds of fibres of pulp from unmixed wood species which do not contain more than 5% of other fibres with an essentially different weight factor.