Name of parameters |
Norm for B Grade |
High grade |
|
1. Mass portion of nitrogen (N) on a dry basis, %min |
46,2 |
2. Mass portion of biuret, %, max |
0,8 |
3. Mass share of water, %, no more:: method of drying |
0,3 |
4. Friability, % |
100 |
5. Granulometric composition, %: granules with size, mm. |
|
1 – 4, not less |
94 |
2 – 4, not less |
70 |
less than 1, not less |
3 |
6-mm sieve residue, no more |
Отс. |
6. Static hardness of granules, kgf/granule, not less |
0,7 |
7. Mass portion of nitrogen formaldehyde, %, not less: |
0,45 |
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