alpha-HCH, 100 µg/ml, Ethyl acetate, 5ml

n-Heneicosane, ?13C: -28.59, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 629-94-7

Metolachlor-2-hydroxy,100ng/µL in Acetonitrile,1ml

2,2’,3,3’,4,5-Hexachlorobiphenyl (129)