Nickel, 1000ug/ml, 100ml

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

Nitrite (NO2-) as N, 1000µg/ml in Water, 100ml

S @ 1000 µg/g (0.100 wt%) in #2 Diesel Fuel, 100ml