Ni @ 1000 µg/mL in 5% HNO3, 100ml

Chromium (Cr), 1µg/ml in 2%-HNO3 / Water, 100ml

Calcium, 10,000ug/ml,100ml

S @ 10000 µg/g (1.00 wt%) in #2 Diesel Fuel, 100ml