Heptenophos, 100 µg/ml, Toluene, 1ml

Perfluoroheptane sulfonic acid, potassium salt,50 µg/mL,MeOH,1mL,

Thiadone (Flufenacet Metabolite), 100 µg/ml, Acet

4.4'-DDE (13C12), 100µg/ml in n-Nonane, 1,2ml