Sulfate Standard, 10 Ppm (1mL = 0.01mg SO4), 500mL

Sulfate Standard 10 ppm by Exaxol, catalog number S66363-500, is an aqueous sulfate standard at 10 ppm, where 1 mL contains 0.01 mg sulfate (SO₄), for low-level sulfate calibration. Available in 500 mL from MBP, a registered vendor to many research institutes across the USA.