Trimethylarsinoxide, 25mg

Mercury (Hg), 1µg/ml in 2%-HNO3 / Water, 3 x 20ml

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

Mn, 1000 µg/mL in 5% HNO3, 100ml