1.1 本规程包括测定所有类型的植物鞣革和有机复鞣皮革的结合单宁和非萃取有机树脂以及鞣制度。这种做法不适用于蓝湿革。 ====意义和用途====== 3.1 本规程可用于测定皮革中不能用水或己烷萃取的非蛋白质或非含氮有机物。例如植物单宁和丙烯酸润滑剂。

1.1 This practice covers the determination of the combined tannin and nonextractable organic resins and the degree of tannage of all types of vegetable-tanned leather and leather with organic retannages. This practice does not apply to wet blue. ====== Significance And Use ====== 3.1 This practice may be used to determine non-protein or non-nitrogen containing organic matter in leather which is not extractable with water or hexane. Examples would be vegetable tannins and acrylic lubricants.