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

Prosulfocarb, 100µg/ml in Acetonitrile, 5ml

[13C12]Dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Sodium 1H,1H,2H,2H-perfluorohexanesulfonate (4:2), 50µg/ml in MeOH, 1,2ml