2,4,7-Trichlorodibenzofuran, 1.2ml x 50ug/ml, nonane

Benzo(a)pyrene D12, 10µg/mL in Cyclohexane, 1ml

Dodecylbenzene (hard type) (mixture of branched chain isomers), 500ml

Ammonium- Nitrate-Nitrite in brine