4-Chlorophenoxyacetic acid, 100 µg/ml, Acetonitri

1,2,3,5-Tetramethylbenzene

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

1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin ,50 µg/mL,n-nonane,1mL,