Description
TYPICAL PHYSICAL PROPERTIES
Name of a parameter
Standard for mark and grade
А
B
Extra
First
Extra
First
Second
1. Nitrogen fraction of total
mass on dry basise, %, not less
46,3
46,2
46,2
46,2
46,2
2. Biuret (Ureido Formamide)
fraction of total mass, %, no more
0,6
1,4
1,4
1,4
1,4
3. Loose ammonia fraction of
total mass, %, no more, for carbamide
– crystal
0,01
0,01
–
–
–
– prilled
0,02
0,03
–
–
–
4. Mass share of water, %, no
more:
– Method of drying
0,3
0,3
0,3
0,3
0,3
– Method Fishera
0,6
0,6
0,5
0,5
0,6
5. Friability, %
–
–
100
100
100
6. distribution of sizes, %:
– fraction of total mass of
granules with size, mm :
§ 1 – 4, not less
–
–
94
94
94
§ 2 – 4, not less
–
–
70
50
–
§ less than 1, not less
–
–
3
5
5
§ 6-mm sieve residue, no
more
–
–
Absence
7. Static hardness of granules,
kgf/granule, not less
–
–
0,7
0,5
0,3