Chlorthion, 100 µg/ml, Ethyl acetate, 5ml

Quizalofop-P-ethyl, 100 µg/ml, Acetonitrile, 5ml

1,3,6,8-Tetrachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Dichloromethane, 20mg/mL in MeOH, 1ml