D6-Isoproturon, 100 µg/ml, Acetone, 1ml

Potassium (K)

1,3,4,6,8-Pentachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

Diazinon, 1000µg/ml in Acetonitrile, 1ml