Composition
Moisture % by wt. — 15.0–25
Colour — Dark Brown to Black
Bulk Density (gm/cm³) — >0.6
Total Organic Carbon % by wt., min. — 13.00
Total Nitrogen (as N) % by wt., min. — 0.8
Total Phosphates (as P2O5) % by wt., min. — 0.6
Total Potash (as K2O) % by wt., min. — 0.6
C:N Ratio — <20
pH — 6.5–7.5
Zinc (as Zn) mg/kg, max. — 1000.0
Copper (as Cu) mg/kg, max. — 300.0
Total Non-Degradable Items — <3%