Each Single Element Calibration Standard for AA and ICP-OES is supplied with a comprehensive Certificate of Analysis that documents the quality and reliability.
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Concentration of Elements includes:
Rhodium (Rh) Pure Standard, 1,000 µg/mL, 10% HCl, 125 mL
Rubidium (Rb) Pure Standard, 1,000 µg/mL, 2% HNO3, 125 mL