Chlorotoluron, 100 µg/ml, Acetonitrile, 5ml

2,2',3,3',4,5,5'-Heptachloro-4'-methoxy[13C12]biphenyl, 1.2ml x 50ug/ml, toluene

1-Methylnaphthalene, 250mg

Fenpiclonil, 100 µg/ml, Acetonitrile, 1ml