Specification | Grade 16-16-16-6(S) | Grade 8-15-30-5(S) | Grade 8-19-29-3(S) | Grade 8-24-24-3(S) |
Mass fraction of total nitrogen, % | 16 ± 1 | 8 ± 1 | 8 ± 1 | 8 ± 1 |
Mass fraction of ammonia nitrogen, % | 9 ± 1 | 8 ± 1 | 8 ± 1 | 8 ± 1 |
Mass fraction of amino nitrogen, % | 6 ± 1 | - | - | - |
Mass fraction of total phosphates on P2O5 basis | 16 ± 1 | 15 ± 1 | 19 ± 1 | 24 ± 1 |
Mass fraction of assimilated phosphates, % | 15,5 ± 1 | 14,5 ± 1 | 18,5 ± 1 | 23,5 ± 1 |
Mass fraction of water soluble phosphates, % | 14,7 ± 1 | 13,7 ± 1 | 17,7 ± 1 | 22,7 ± 1 |
Mass fraction of total potassium on K2O basis, % | 16 ± 1 | 30 ± 1 | 29 ± 1 | 24 ± 1 |
Mass fraction of total sulfates on sulphur basis, no less, % | 6 | 5 | 3 | 3 |
Mass fraction of water, % | 1,8 | 1,8 | 1,8 | 1,8 |
Granulometric composition: Mass fraction of granules by size: less than 1 mm 2 mm - 5 mm more than 6 mm | no more than 5 no less than 90 0 | no more than 5 no less than 90 0 | no more than 5 no less than 90 0 | no more than 5 no less than 90 0 |
Total of nutrient substances (total nitrogen, total phosphates, potassium (K2O)), no less (high limit of total nitrogen, total phosphates, potassium (K2O) is acceptable) | 47 | 52 | 55 | 55 |
Static strength of granules, no less | 3 | 5 | 5 | 4 |
Friability (treated by the anti-clodding agent) | 100 | 100 | 100 | 100 |
