Atrazine, 250mg

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

Chlordane, trans-gamma, 100µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 5103-74-2

Trifluralin, 100 µg/ml, Methanol, 1ml