Iron, 10,000ug/ml, 100ml

Sulfur, 5000µg/g (0.500 wt%) in 75 cSt Mineral Oil, 100ml

Iodide (I), 1000µg/mL in Water, 100ml

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