Levonorgestrel, 100µg/mL in Acetonitrile, 1ml

Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane

N-Nitrosodibenzylamine, 1000µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 5336-53-8

1-Ethyl-2-phenylbenzimidazole, neat, Solvent-neat, Unit 10MG, # of units-8, Cas.no. 6528-75-2