Picene, 50 µg/mL in Toluene, 1ml

2,2,4,5-Tetrachlorobiphenyl (BZ-49)

4,5-Dichloro-2-(2,4-dichlorophenoxy)phenol (4-Chlorotriclosan), 1.2ml x 50ug/ml, nonane

BTEX (20 µg/mL)