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

Boron, 1000ug/ml, 100ml

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

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