TECHNICAL SPECIFICATIONS Indicator name Grade "B" 1. Mass fraction of nitrogen in terms of dry matter,%, not less than , 2. Mass fraction of biuret,%, no more than 1,4 3. Mass fraction of free ammonia,%, no more, for urea crystalline prilled 4. Mass fraction of water,%, no more: drying method 0.3Fisher's method 0.5 5. Looseness,% 100 6. Granulometric composition,%: â?? mass fraction of granules in size, mm: from 1 to 4, not less than 94 94 from 2 to 4, not less than 70 70 less than 1, not less than 3 3 sieve residue 6 mm, no more Absence 7. Static strength of granules, kgf / granule, not less than 0.7
