Metformin-HCl, 100µg/ml in Acetonitrile, 5ml

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

2,2',3,4,4',5,6,6'-Octachlorobiphenyl, 100 µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 74472-52-9

2,2',4,5'-Tetrabromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 60044-24-8