Major Indexs Standard (%)
Total Nitrogen ,% ≥ 15.5
Nitrate Nitrogen ,% ≥ 14.1
Ammonium Nitrogen ,% ≤ 1.3
Calcium(Ca) ,% ≥ 18
CaO % ≥ 26
Water Insoluble ,% ≤ 1.5
Iron (Fe), % ≤ 0.005
Chlorides(Cl) % ≤ 0.02
PH value 5-7
Size 2 -4 mm
Appearance White granular