Analyte: Magnesium nitrate hexahydrate (ICP grade) (as magnesium, CAS Number: 13446-18-9; Analyte: Silver nitrate (ICP grade) (as silver), CAS Number: 7761-88-8; InChl: SQGYOTSLMSWVJD-UHFFFAOYSA-N; Analyte: Antimony (ICP grade), CAS Number: 7440-36-0; InChl: WATWJIUSRGPENY-UHFFFAOYSA-N; Analyte: Thallium (I) nitrate (ICP grade) (as thallium), CAS Number: 10102-45-1 . EPA, Method: 6010C.