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

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

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

Method 200.8/1638/1640 Internal Standard, 10µg/ml in 2%-HNO3, 4x25ml