This part of GB/T 2441 specifies the determination of sulfate content in urea for industrial use by visual nephelometric method. This section applies to the determination of sulfate content in urea synthesized from ammonia and carbon dioxide.
GB/T 2441.8-2010 Referenced Document
HG/T 2843 Chemical fertilezer products-standard volumetrie,standard,reagent and indicator solutions for chemical analysis
GB/T 2441.8-2010 history
2010GB/T 2441.8-2010 Determination of urea-Part 8: Sulphate content-Visible turbidimetric method
2001GB/T 2441.8-2001 Determination of urea Determination of sulphate content Visible turbidimetric method