ISO 13906:2008规定了测定各类动物饲料中酸性洗涤剂纤维（ADF）不溶性残留物和酸性洗涤剂木质素（ADL）的方法。ADF和ADL的测定限分别为1%和1.5%。 使用重量分析常规和参考方法。

ISO 13906:2008 specifies a method for the determination of acid detergent fibre (ADF) insoluble residue and acid detergent lignin (ADL) in all types of animal feeding stuffs. The limit of determination is 1 % mass fraction for ADF and 1,5 % mass fraction for ADL. A gravimetric routine and reference method is used.