Exaxol 7 Component ICP, Quality Control Standard, QC #7, in 5% HNO3

7-Component ICP Quality Control Standard QC #7 by Exaxol, catalog numbers 73QC7-100, 73QC7-250, and 73QC7-500, is a 7-element ICP quality control standard (QC #7) in 5% nitric acid, used to verify ICP-OES calibration with an independent source. Available in 100 mL, 250 mL, and 500 mL from MBP, a registered vendor to many research institutes across the USA.