Analyte: Ammonium (dihydrogen) phosphate - monobasic (ICP grade) (as phosphorus), CAS Number: 7722-76-1; InChl: LFVGISIMTYGQHF-UHFFFAOYSA-N; Analyte: Ammonium metavanadate (ICP grade) (as vanadium), CAS Number: 7803-55-6; Analyte: Cobalt nitrate hexahydrate (ICP grade) (as cobalt), CAS Number: 10026-22-9 ; . EPA, Method: 200.7 Rev 3.3; EPA, Method: 200.7 Rev 4.4.