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View Actual EPA Method 9038 (PDF File)
EPA Method 9038:SULFATE (TURBIDIMETRIC)
Summary:Sulfate ion is converted to a barium sulfate suspension under controlled conditions. The resulting turbidity is determined by a nephelometer, filter photometer, or spectrophotometer and compared with a curve prepared from standard sulfate solution.
Scope:This method is applicable to ground water, drinking and surface waters, and domestic and industrial wastes.
Report Number:SW-846 Ch 5