Item | Standard |
Total Nitrogen(N)mass fraction | 35% Min |
Sulfur (S) of the mass fraction | 15% Min |
Nutrient release rate | 15% Max |
Static nitrogen dissolution rate | 30% Max |
Biuret mass fraction | 1.5% Max |
Water (H2O) mass fraction | 1.0 Max |
Size (1.00-4.75mm or 3.35-5.60mm) | 90% Min |