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

n-Tridecane, ?13C: -33.47, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 629-50-5

Benzo[a]pyrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 50-32-8

Metoprolol Tartrate, >98%, 5g