Designed to contain virtually every element in the mass spectrum for concentration checks. Multi-element Calibration Standard 5, Matrix per Volume: H2O with trace of HF per 100 mL, Concentration of Element: 10µg/mL Boron, 10µg/mL Germanium, 10µg/mL Molybdenum, 10µg/mL Niobium, 10µg/mL...