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Fertilizers
1. Single Superphosphate (16% P2 O5 Powdered)
| Moisture per cent by weight,maximum | 12% |
| Free phosphoric acid (as P2 O5)per cent by weight, maximum | 4% |
| Water soluble phosphates (as P2 O5) per cent by weight, manimum | 14.5% |
| Solphur (as S) per cent by weight, manimum | 11% |
| Neutral ammonium citrate soluble phosphate (as P2 O5)per cent by weight, manimum | 16% |
2. Single Superphosphate (16% P2 O5 Granulated)
| Moisture per cent by weight,maximum | 5% | |
| Free phosphoric acid (as P2 O5)per cent by weight, maximum | 4% | |
| Water soluble phosphates (as P2 O5) per cent by weight, manimum | 14.5% | |
| Particle size - Not less than 90 per cent of the material shall pass through 4 mm | ||
| IS sieve and shall be retained on 1mm IS sieve.Not more than 5cent shall pass through 1 mm IS sieve | ||
| Sulphur (as S), per cent by weight,minimum. | 11% | |
| Neutral ammonium citrate soluble phosphate (as P2 O5) per cent by weight, manimum | 16% | |
3. Boronated Single Superphosphate(16 P2O5 Powdered)
| Moisture per cent by weight,maximum | 12% |
| Free phosphoric acid (as P2 O5) per cent by weight, maximum | 4% |
| Water soluble phosphates (as P2 O5) per cent by weight, manimum | 14.5% |
| Boron (as B) per cent by weight | 0.15%-0.20% |
| Sulphur (as S) per cent by weight,minimum | 11% |
| Neutral ammonium citrate soluble phosphate (as P2 O5) per cent by weight, manimum | 16% |
4. Boronated Single Superphosphate(Granular) (16% P2 O5 )
| Moisture per cent by weight,maximum | 12% | |
| Free phosphoric acid (as P2 O5) per cent by weight, maximum | 4% | |
| Water soluble phosphates (as P2 O5) per cent by weight, manimum | 14.5% | |
| Boron (as B) per cent by weight | 0.15%-0.20% | |
| Sulphur (as S) per cent by weight,minimum | 11% | |
| Neutral ammonium citrate soluble phosphate (as P2 O5) per cent by weight, manimum | 16% | |
| Particle size - Not less than 90 per cent of the material shall pass through 4 mm | ||
| IS sieve and shall be retained on 1 mm IS sieve.Not more than 5 cent shall pass through 1 mm IS sieve. | ||
5. SSP Fortified with Zinc)
| Moisture per cent by weight,maximum | 12% |
| Free phosphoric acid (as P⊂2 O⊂5) per cent by weight, maximum | 4% |
| Water soluble phosphates (as P⊂2 O⊂5) per cent by weight, manimum | 14.5% |
| Neutral ammonium citrate soluble phosphate (as P⊂2 O⊂5) per cent by weight manimum | 16% |
| Sulphur (as S) per cent by weight,minimum | 11% |
| Zinc (as Zn)per cent by weight minimum | 0.5% |