猪饲料中氮含量质控样品/GB/T 6432-2018 Quality control samples for nitrogen in pig feed
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鸡饲料中氮含量质控样品/GB/T 6432-2018 Nitrogen content quality control in chicken feed
SHAM_234675 | 10g
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饲料中蛋白质质控样品/GB/T 6432-2018/GB/T 5916-2020 Protein quality control in feed
BWS0048-2016 | 50g
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猪饲料中铜、铁、锰、锌质控样品/GB/T 13885-2017/GB 5009.268-2016 Cu,Fe,Mn and Zn quality control samples in pig feed
BWS0254-2016 | 30g/瓶
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饲料中铅质控样品/GB/T 13080-2018/GB 13078-2017 Lead quality control in feed
BWS0225-2016 | 30g
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鱼饲料中粗蛋白质控样品/GB/T 6432-2018 Crude protein quality control in fish feeds
SHAM_234704 | 50g
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饲料中钙质控样品/GB/T 13885-2017 Ca quality control in feed
BWS0214-2016 | 30g
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饲料中钾质控样品/GB/T 13885-2017 Potassium Quality Control in Feed
BWS0203-2016 | 30g
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2. 硫酸-催化剂消解(420℃,2小时)
3. 氢氧化钠蒸馏(蒸汽温度125℃)
4. 硼酸吸收液(20g/L)接收氨气
5. 0.1mol/L HCl标准溶液滴定至终点
② 催化剂推荐硫酸铜与硫酸钾(10:1)混合
③ 氮换算蛋白质系数统一按6.25计
以上信息仅供参考,请以相应标准的原文为准!