

Cobalt AA Standard 1,000 ppm in 2% HNO3 by Exaxol, catalog numbers C1060-100 and C1060-500, is a single-element cobalt standard at 1,000 ppm (µg/mL) in 2% HNO3, for atomic absorption calibration. Available in 100 mL and 500 mL from MBP, a registered vendor to many research institutes across the USA.

