Mn, 1000 µg/mL in 5% HNO3, 100ml

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

Germanium (Ge), 100 µg/mL in 2%-HNO3 / Water, 4x25ml

Sulfide (S), 1000µg/mL in Water, 3 x 20ml