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CITY COMPOST
1. Moisture ,maximum 25
2. Particle size Minimum 90% material
Should Pass through 4.0 mm IS Sieve
3. Bulk density (g/cm 3) 1.0
4. Total Organic carbon, and minimum 12.0
5. Total of nitrogen (as N), Phosphate as P2O5
And potash as K2O minimum 1.2
6. C: N ratio 20
7. pH 6.5-7.5
8. Conductivity maximum 4.0
9. Heavy metal content, 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