BS EN ISO 5983-2-2009 动物饲料.含氮量的测定和粗蛋白含量的计算.第2部分:分块消化/蒸汽蒸馏法(ISO 5983-2-2009)

标准号：BS EN ISO 5983-2-2009
中文标准名称：动物饲料.含氮量的测定和粗蛋白含量的计算.第2部分:分块消化/蒸汽蒸馏法(ISO 5983-2-2009)
英文标准名称：Animal feeding stuffs - Determination of nitrogen content and calculation of crude protein content - Part 2: Block digestion and steam distillation method (ISO 5983-2:2009)
标准类型：B46
发布日期：2009/7/31 12:00:00
实施日期：2009/7/31 12:00:00
中国标准分类号：B46
国际标准分类号：65.120
引用标准：ISO 1871;ISO 6498
适用范围：This part of ISO 5983 specifies a method for the determination of nitrogen content of animal feeding stuffs according to the Kjeldahl method, and a method for the calculation of the crude protein content.It is suitable for use as a semi-micro rapid routine method using block digestion, copper catalyst, and steam distillation into boric acid.The method is applicable to the determination of greater than 0,5 % mass fraction Kjeldahl nitrogen in animal feeding stuffs, pet foods, and their raw materials.The method does not measure oxidized forms of nitrogen nor heterocyclic nitrogen compounds.The method does not distinguish between protein nitrogen and non-protein nitrogen.