标准摘要
[中文适用范围]： 其原理在于用凯氏定氮法分解测试部分，蒸馏释放出的氨，用硫酸或盐酸滴定氨，以酚酞为指示剂测定氮含量。 该方法适用于所有类型鞣制的所有类型皮革。 [外文原描述]： The principle consists in decomposition of a test portion by Kjeldahl method, distillation of the ammonia liberated, determination of the nitrogen content by titration of the ammonia with sulfuric or hydrochloric acid, using phenolphthalein as indicator. The method is applicable to all types of leather in all types of tannage.
英文名称Leather — Determination of nitrogen content and "hide substance" — Titrimetric method