Monopotassium Phosphate (MKP): What Buyers Should Know
Monopotassium phosphate (MKP) is a fully water-soluble phosphorus-potassium fertilizer with an NPK analysis of 0-52-34, widely used in drip fertigation, foliar spraying, and hydroponic nutrient programs. Buyers source MKP from China for its high purity (typically 98-99%), low salt index, and chloride-free formula that supports flowering and fruit setting.
The key specifications are purity, water solubility, pH, and heavy-metal limits. Buyers should confirm food/technical grade options and moisture control. The curated suppliers below are screened against these criteria.
Curated Suppliers — Monopotassium Phosphate (MKP)
Industrial-grade 99% monopotassium phosphate (MKP) and phosphate-based water-soluble fertilizers. Patented organic-solvent process, 20,000 sqm facility, 30 km to Guoyuan Port.
7 Checks Before Choosing a Monopotassium Phosphate (MKP) Supplier
1. Purity
Confirm 98%+ (food/technical grade) to avoid insoluble residues clogging drippers.
2. Solubility
Look for complete water solubility with no sediment at 20°C.
3. NPK analysis
Standard MKP is 0-52-34; verify the label matches the actual assay.
4. pH
A mildly acidic solution (pH ~4.5) improves nutrient uptake in hard water.
5. Heavy metals
Request third-party test reports for Pb, As, Cd, and Hg.
6. Moisture
Low moisture (below 0.5%) prevents caking during storage and shipping.
7. Packaging
25kg bags or custom weights; confirm a food-grade inner liner for sensitive markets.
Frequently Asked Questions
What is the NPK of monopotassium phosphate?
Standard MKP has an NPK analysis of 0-52-34, meaning 52% phosphate (P2O5) and 34% potash (K2O) with no nitrogen.
Is MKP fully water soluble?
Yes. High-purity MKP dissolves completely and is widely used in drip irrigation, foliar sprays, and hydroponic nutrient solutions.
Can MKP be mixed with calcium fertilizers?
Avoid mixing concentrated MKP with calcium nitrate; use separate tanks or alternate applications to prevent precipitation.
What is the typical MOQ for MKP from China?
Standard 25kg bags usually start at 5-10 metric tons; see each supplier profile for exact MOQ and available grades.