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

1,2-Dichloroethane, 2000µg/ml in MeOH, 1ml

2,3,5,6-Tetrachlorobiphenyl (65)

Sotalol HCl, 100µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 959-24-0