This standard specifies the determination of total nitrogen content in urea. This standard applies to the determination of the total nitrogen content of urea synthesized from ammonia and carbon dioxide.
GB/T 2441.1-2001 history
2008GB/T 2441.1-2008 Determination of urea.Part 1:Total nitrogen content
2001GB/T 2441.1-2001 Determination of urea-Determination of total nitrogen content