Dichloromethane, 100µg/ml in MeOH, 5ml

2,3,6,7-Tetrachloro[13C12]biphenylene, 1.2ml x 50ug/ml, nonane

D5-Propachlor ESA sodium salt, 100µg/ml in Acetonitrile, 1ml

D6-Flufenacet ESA sodium salt, 100 µg/ml in Acetonitrile, 1ml