Saccharin, 100 µg/ml, Acetonitrile, 1ml

2,3,7,8-Tetrachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Dicamba, 100 µg/ml, Acetonitrile, 1ml

Di-n-butyl sulfide as S