TCVN 6498-1999 Soil quality Determination of total nitrogen Modifierd Kejldahl method《土质 总氮的测定 改进的凯氏定氮法》.pdf

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GB T 33317-2016 塑料 酚醛树脂 六次甲基四胺含量的测定 凯氏定氮法、高氯酸法和盐酸法.pdf

SH T 1157.2-2015 生橡胶 丙烯腈-丁二烯橡胶(NBR)中结合丙烯腈含量的测定 第2部分 凯氏定氮法.pdf

SN T 3470.2-2013 生橡胶 丙烯腈-丁二烯橡胶(NBR)中结合丙烯腈含量的测定.第 2部分：凯氏定氮法.pdf

GB T 33317-2016 塑料 酚醛树脂 六次甲基四胺含量的测定 凯氏定氮法、高氯酸法和盐酸法.pdf

ASTM E258-2007(2015) 6419 Standard Test Method for Total Nitrogen in Organic Materials by Modified Kjeldahl Method《采用凯氏定氮法测定有机材料中总氮的标准试验方法》.pdf

GOST R 55246-2012 Milk and milk products Determination of non-protein nitrogen content by Kjeldahl method《奶和奶制品 采用凯氏定氮法测定非蛋白氮含量》.pdf

SANS 333-1996 Coal - Determination of nitrogen - Semi-micro Kjeldahl method《煤炭 氮含量测定 半微量凯氏定氮法》.pdf

GB T 6432-2018 《饲料中粗蛋白的测定 凯氏定氮法》.pdf

DB37 T 1627-2010 植株全氮的测定 凯氏定氮法.pdf

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