Quality control substances for sulfur, available phosphorus and water-soluble phosphorus in superphosphate
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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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Total nitrogen, water-soluble phosphorus and available phosphorus quality control substances in diammonium phosphate fertilizer
RMK059 | 70g/瓶
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Quality control substances for available phosphorus, available calcium, available magnesium and soluble silicon in calcium magnesium phosphate fertilizer
RMK057 | 70g/瓶
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Quality control substances for nitrogen, phosphorus, potassium, available calcium, available magnesium, sulfur and chloride ions in blended fertilizers (BB)
RMK068 | 70g/瓶
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Quality control substances for total nutrients (nitrogen, phosphorus, potassium) in water soluble fertilizers
RMK044 | 70g/瓶
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Quality control substances for total nutrients (nitrogen, phosphorus, potassium) in water soluble fertilizers
RMK066 | 70g/瓶
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Available phosphorus quality control substance in soil
RMU098a | 70g/瓶
Quality control substances for sulfur, available phosphorus and water-soluble phosphorus in superphosphate
GB/T20413-2017
水溶性磷（P2O5）及有效磷（P2O5）采用磷钼酸喹啉重量法、硫（S）含量采用灼烧法、电感耦合等离子体发烧光谱法（ICP-OES）。
水溶性磷（P2O5）
8.64
0.83
%
有效磷（P2O5）
14.40
1.3
%
硫（S）
11.90
1.1
%
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