Cr @ 1000 µg/mL in 5% HCl, 100ml

Ni @ 1000 µg/mL in 5% HNO3, 100ml

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

Cr, 1000 µg/mL in 5% HNO3, 100ml