Ni @ 1000 µg/mL in 5% HNO3, 100ml

Si @ 10000 µg/mL in H2O, tr. F-, 100ml

S @ 1000 µg/g (0.100 wt%) in #2 Diesel Fuel, 100ml

Cu @ 1000 µg/mL in 5% HNO3, 100ml