Quality control substances for total nutrients (nitrogen, phosphorus, potassium) in water soluble fertilizers
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Quality control substances for total nutrients (nitrogen, phosphorus, potassium) in water soluble fertilizers
RMK066 | 70g/瓶
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Total nitrogen, water-soluble phosphorus and available phosphorus quality control substances in diammonium phosphate fertilizer
RMK059 | 70g/瓶
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Quality control substance of total phosphorus, available phosphorus and water-soluble phosphorus in compound fertilizer
RMK006a | 70g/瓶
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Quality control substances for organic matter in water-soluble fertilizers
RMK063 | 50g/瓶
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Quality control substances for total nutrients (N, P, K) in organic fertilizers
RMK008b | 70g/瓶
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Quality control substances for total nutrients (N, P, K) in organic fertilizers
RMK007b | 70g/瓶
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Quality control substances for humic acid content in water-soluble fertilizers
RMK064 | 50g/瓶
Quality control substances for total nutrients (nitrogen, phosphorus, potassium) in water soluble fertilizers
NY/T1977-2010
总氮(N)采用杜马斯燃烧法、硫酸消煮-蒸馏滴定法(不含硝酸态氮);磷(P2O5)采用磷钼酸喹啉重量法、电感耦合等离子体发射光谱法(ICP-OES)、紫外分光光度法(UV);钾(K2O)采用四苯硼酸钾重量法、电感耦合等离子体发射光谱法(ICP-OES)、火焰原子吸收光谱法(FAAS)。
总氮(N)
22.1
1.4
%
(不含硝酸态氮)
磷(P2O5)
14.8
1.0
%
钾(K2O)
14.9
1.0
%
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