Phosphate Rich Organic Manure 1. Moisture, per cent by weight, Maximum 25 2. Particle size minimum 90% material Should Pass through 4.0 mm IS Sieve 3. Bulk density (g/cm 3) Less Than 1.6 4. Total Organic carbon, Minimum 7.9 5. Total of nitrogen (as N), Minimum 0.4 6. Total Phosphate (as P2O5) Minimum 10.4 7. C: N ratio Less Than 20:1 8. PH Maximum 6.7 9. Conductivity (as dSm-1) 8.2 10. Heavy metal content, (as mg / Kg) maximum Arsenic (as As2 O3) 10.00 Cadmium (as Cd) 5.00 Chromium (as Cr) 50.00 Copper (as Cu) 300.0 Mercury (as Hg) 0.15 Nickel (as Ni) 50.00 Lead (as Pb) 100.00 Zinc (as Zn) 1000.00