Alachlor, 100 µg/ml, Methanol, 5ml

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

Docosanoic acid (Behenic), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 112-85-6

2,4'-DDE, 100 µg/ml, Ethyl acetate, 5ml