o-Aminoazo-p-toluene

Heptachlor, 100 µg/ml, Ethyl acetate, 1ml

Fluorene, 100 µg/ml, Acetonitrile, 1ml

1,1,1-Trichloro-2,2-bis[4-chloro(13C6)phenyl]ethane, 1.2mL x 100ug/mL, nonane