Primary Drkg Wtr Mtls: Sol A OnlyAg - 10 ug/mL, Ba, Cd, Se - 50 ug/mL, As, Cr, Pb, - 100 ug/mL in 2% HNO3, (µg/mL) Silver at 10, Barium, Cadmium, Selenium at 50, Arsenic, Chromium, Lead at 100 in 2% HNO3 + Trace HF. 12 months expiry date. Traceable to NI
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