DIN EN ISO 4048:2018 皮革 化学试验 可溶于二氯甲烷的物质和游离脂肪酸含量的测定(ISO 4048:2018);德文版 EN ISO 4048:2018
Leather - Chemical tests - Determination of matter soluble in dichloromethane and free fatty acid content (ISO 4048:2018); German version EN ISO 4048:2018
This document specifies a method for the determination of the substances in leather which are soluble in dichloromethane. This method is applicable to all types of leather.