BS EN ISO 1833-7:2017规定了使用甲酸测定聚酰胺质量百分比的方法 去除非纤维物质后的纤维，在由聚酰胺与棉、粘胶、铜、莫代尔、lyocell、聚酯、聚丙烯、氯纤维、丙烯酸、玻璃纤维、， 弹性多酯、弹性烯烃和三聚氰胺、羊毛（如果羊毛含量小于或等于25%）或动物毛纤维。当羊毛含量超过25%时，本文件不适用；ISO 1833-4适用。交叉引用:ISO 1833-1:2006ISO 1833-4:2017购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS EN ISO 1833-7:2017 specifies a method, using formic acid, to determine the mass percentage of polyamide fibre, after removal of non-fibrous matter, in textiles made of mixtures ofpolyamidewithcotton, viscose, cupro, modal, lyocell, polyester, polypropylene, chlorofibre, acrylic, glass fibre, elastomultiester, elastolefin and melamine, orwool (if the wool content is less than or equal to 25 %), or animal hair fibres.This document does not apply when the wool content exceeds 25 %; ISO 1833-4 applies.Cross References:ISO 1833-1:2006ISO 1833-4:2017All current amendments available at time of purchase are included with the purchase of this document.