Sulfate Standard, 1,000 Ppm (1mL = 1mg SO4), 500 mL

Sulfate Standard 1,000 ppm by Exaxol, catalog number S66362-500, is an aqueous sulfate standard at 1,000 ppm, where 1 mL contains 1 mg of sulfate (SO₄), used to prepare calibration standards for sulfate testing. Available in 500 mL from MBP, a registered vendor to many research institutes across the USA.