Agricultural Grade vs Food Grade Mono Potassium Phosphate (MKP) Purity & Safety Standards

Jun 16, 2026

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Mono Potassium Phosphate (MKP) is divided into agricultural grade and food grade according to production purification standards and safety indicators. The two grades have huge differences in impurity control, microbial indicators and application safety, requiring strict differentiated selection in procurement and use.

 

Agricultural grade MKP is mainly used for crop fertilization and aquafeed additives. The purity is above 98%, with stable nutritional indicators. It focuses on phosphorus and potassium content to meet plant growth and aquatic animal nutritional needs, with reasonable price and high cost performance for large-scale agricultural use.

 

Food grade Mono Potassium Phosphate (MKP) implements strict food safety production standards, with purity above 99% and ultra-low heavy metal and microbial residue. It is non-toxic and harmless to human body, and can be used as food acidity regulator, nutritional fortifier and food additive in beverage, pastry and canned food processing.

 

In terms of safety standards, food grade products have passed international food certification systems, with strict limits on arsenic, lead and harmful residues. Agricultural grade products relax partial safety indicators and focus on nutritional efficiency. Food grade MKP undergoes multiple purification and sterilization processes to ensure edible safety.

 

For user selection, agricultural planting and aquaculture scenarios choose agricultural grade MKP to control costs; food processing, pharmaceutical auxiliary and edible additive fields must choose food grade Mono Potassium Phosphate to comply with international food safety access standards.

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