Na, 1000 µg/mL in 5% HNO3, 100ml

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

Phosphate (PO4-3) as P, 1000µg/ml in Water, 500ml

Mercury (Hg), 1µg/ml in 2%-HNO3 / Water, 3 x 20ml