


Sulfide Standard 1,000 ppm, Preserved by Exaxol, catalog numbers S6637-100, S6637-500, and S6637-1, is an aqueous sulfide standard at 1,000 ppm (preserved), used to prepare calibration and check standards. Available in 100 mL, 500 mL, and 1 L from MBP, a registered vendor to many research institutes across the USA.


