标准编号：ISO 4098:2006
中文名称：皮革 化学试验 水溶物、水溶无机物和水溶有机物的测定
英文名称：Leather — Chemical tests — Determination of water-soluble matter, water-soluble inorganic matter and water-soluble organic matter
发布日期：2006-01
标准范围
This International Standard specifies a method of determination of water-soluble matter, water-solubleinorganic matter and water-soluble organic matter.It is applicable to all leather types. The result obtained by this analysis depends on factors such as:the degree to which the leather is ground;the extraction temperature;the extraction period;the ratio of leather to water.To obtain comparable results, it is consequently imperative that test conditions should be accuratelyreproduced.In all cases, any ammonium salts in the filtrate are included as part of the water-soluble matter and are thendecomposed on ignition. Thus they contribute towards the result for water-soluble organic substances. Theconcentration of the ammonium salts can be determined in the filtrate separately if required.
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