This standard specifies a general method for the determination of sulfate by visual turbidimetry. This standard applies to the determination of trace sulfate in chemical reagents. The detection range is 0.4μg/mL~4/μg/mL (calculated as SO4).
GB/T 9728-2007 Referenced Document
GB/T 602 Chemical reagent--Preparations of standard solutions for impurity
GB/T 603 Preparation of preparations and products used in chemical reagent test methods*, 2023-08-06 Update
GB/T 6682 Water for analytical laboratory use.Specification and test methods*, 2008-05-15 Update
GB/T 9728-2007 history
2007GB/T 9728-2007 Chemical reagent.General method for the determination of sulphate
1988GB/T 9728-1988 Chemical reagent--General method for the determination of sulphate