Key Highlights for Buyers
Guaranteed Nutrient Analysis: Total Nitrogen (N) ≥ 13.5% (100% Nitrate-N), Soluble Potash (K2O) ≥ 44.0%.
Controlled-Release Technology: Advanced polymer coating system with tailorable longevity options (60, 90, 120, or 180 days at 25°C).
Target Applications: High-value greenhouse crops, substrate fertigation blends, and specialty horticultural formulations.
Global Regulatory Compliance: Fully compliant with EU Fertilizer Regulation (FPR 2019/1009), US AAPFCO standards, and REACH registered.
Commercial Specifications
|
Parameter |
Specification |
Test Standard / Method |
|
Product Name |
Controlled-Release Potassium Nitrate (CR-NOP) |
Commercial Grade |
|
Chemical Formula / Core |
KNO3 core with inert polymer coating |
Factory Standard |
|
Total Nitrogen (N) |
≥ 13.5% (100% Nitrate-N) |
AOAC 955.04 / EN 15476 |
|
Soluble Potash (K2O) |
≥ 44.0% |
AOAC 983.02 / EN 15477 |
|
Particle Size Distribution |
2.00 mm – 4.00 mm (≥ 95% within range) |
ISO 8397 |
|
Moisture Content |
≤ 0.5% |
ISO 5381 |
|
Bulk Density |
1.05 – 1.15 g/cm³ |
ISO 3944 |
|
Release Longevity |
60 / 90 / 120 / 180 Days (Customizable) |
EN 13266 / ISO 21263 |
|
Standard Test Temperature |
25°C (77°F) |
ISO 21263 |
|
Coating Type |
Multi-layer solvent-free polymer coating |
Environmentally degradable |
Performance Advantage: CR-NOP vs. Standard KNO3
|
Feature |
Standard Water-Soluble KNO3 |
Controlled-Release Potassium Nitrate (CR-NOP) |
|
Nutrient Availability |
Immediate release; quick dissolution |
Temperature-governed, controlled release |
|
Leaching Losses |
High risk during heavy rainfall/irrigation |
Minimized risk through moisture-diffusion control |
|
Application Frequency |
Requires multiple split applications |
Single-basal application saves time and labor |
|
Root Safety |
Risk of EC spikes and potential root burn |
Smooth, synchronized release; prevents salt shock |
|
Specialty Blending |
Suitable for fertigation and liquid blends |
Ideal for soil substrates and CRF blend formulations |
Typical Release Profile (90-Day Grade at 25°C)
|
Interval |
Cumulative Release Target |
Performance Objective |
|
Initial Release (24 Hours) |
≤ 5.0% |
Prevents early root burn and salt shock |
|
Day 30 |
30.0% – 40.0% |
Supports vegetative growth phase |
|
Day 60 |
65.0% – 75.0% |
Sustains peak nutrient demand |
|
Day 90 |
≥ 85.0% |
Complete release aligned with harvest cycle |
Quality Assurance & Regulatory Compliance
Quality Systems: Manufactured in facilities certified under ISO 9001:2015 and ISO 14001:2015.
EU Market: Fully REACH registered; compliant with EU Fertilizer Regulation (EU) 2019/1009 regarding polymer degradation guidelines.
US Market: Compliant with Association of American Plant Food Control Officials (AAPFCO) standards for slow and controlled-release claims.
Standard Documentation Suite: Technical Data Sheet (TDS), Certificate of Analysis (COA per lot), Safety Data Sheet (SDS - 16 sections, GHS compliant), and Laboratory Release Test Reports.
FAQ
Q: How does ambient temperature affect the nutrient release rate of CR-NOP?
A: CR-NOP uses a moisture-diffusion mechanism where nutrient release accelerates at higher temperatures and slows at lower temperatures. This naturally aligns with plant growth curves, as crops consume more nutrients during warm peak-growing conditions.
Q: Can CR-NOP be customized for specific release durations?
A: Yes. We offer standard release profiles of 60, 90, 120, and 180 days at 25°C. Custom release curves and particle sizing can be engineered based on your specific crop cycle or formulation needs.
Q: Is the polymer coating environmentally safe and compliant with microplastic regulations?
A: Yes. The coating system is designed to break down safely in soil over time and complies with international environmental guidelines, including the EU Fertilizer Products Regulation (FPR 2019/1009).
Q: Can CR-NOP be blended with other conventional granular fertilizers?
A: Absolutely. The uniform granule size (2.00 mm – 4.00 mm) and high mechanical strength minimize dust and prevent segregation when blending with other CRF components, urea, or compound NPKs.
Q: What documentation is provided with commercial shipments for export?
A: Every commercial order includes a Certificate of Analysis (COA), Technical Data Sheet (TDS), GHS-compliant Safety Data Sheet (SDS), and a Laboratory Release Test Report confirming batch quality and compliance.
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