General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 1880-1995
Replace
GB 1880-1980
Scope
This standard specifies the gravimetric method for the determination of sulfur trioxide content. This standard applies to the determination of sulfur trioxide content greater than 0.1% in phosphate rock and phosphate concentrate products.
GB/T 1880-1995 history
1995GB/T 1880-1995 Phosphate rock and concentrate--Determination of sulfur trioxide content--Gravimetric method