This standard specifies the particle size determination of urea by sieving method. This standard applies to the determination of the particle size of urea synthesized from ammonia and carbon dioxide.
GB/T 2441.7-2001 history
2010GB/T 2441.7-2010 Determination of urea-Part 7: Particle size-Sieve method
2001GB/T 2441.7-2001 Determination of Urea Determination of particle size Sieve method
1991GB/T 2448-1991 Determination of urea particle size by sieving method