ISO 3074:2014规定了精梳毛条中二氯甲烷可溶物的测定方法。它的用途可以扩展到其他形式的羊毛。 应该认识到，在规定条件下用二氯甲烷萃取并不能完全去除羊毛样品中的所有脂肪物质。另外一部分，可能是性质相似的材料，通常会通过使用溶剂来提取，溶剂会导致羊毛纤维的更大膨胀。 该方法仅适用于100%羊毛制品。如果应用于含有羊毛以外纤维的产品，可能会产生误导性结果。

ISO 3074:2014 specifies a method for determining the dichloromethane-soluble matter in combed wool sliver. Its use can be extended to wool in other forms. It should be recognized that extraction with dichloromethane under the prescribed conditions does not completely remove all the fatty material present in a sample of wool. A further amount, possibly material of similar character, will usually be extracted by the use of solvents that cause greater swelling of the wool fibres. The method is applicable only to 100 % wool products. It can give misleading results if applied to products in which fibres other than wool are present.