Pyrethrins, 10 µg/ml, Ethyl acetate, 10ml

1,3,7,9-Tetrachlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane

Trifluoromethanesulfonic acid, 50µg/ml in MeOH, 5ml

Sulfur Standard: S @ 10 µg/g (0.0010 wt%) in #2 Diesel Fuel, 100ml