ISO 8603-1993 标准详情
- 标准号:ISO 8603-1993
- 中文标题:固体肥料.尿素氮含量测定.占吨氢醇重量法
- 英文标题:solid fertilizers-determination of urea nitrogen content-gravimetric method using xanthydrol
- 标准类别:国际标准化组织标准ISO
- 发布日期:1993-02-01
The principle of the method specified is precipitation of the urea with xanthydrol in acetic acid solution, filtration of the dixanthylurea precipitate, drying, and weighing. This method is not applicable to fertilizers containing cyanamide or the co
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