Sn @ 10000 µg/mL in 5% HNO3, tr. HF, 100ml

Cu @ 1000 µg/mL in 5% HNO3, 100ml

Sulfur, 5000µg/g (0.500 wt%) in 75 cSt Mineral Oil, 100ml

Chloride (Cl-), 1000µg/mL in Water, 500ml