Irgarol-d9 (tert-butyl-d9),100 µg/mL,acetonitrile,1mL,

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

Tri-n-butyl phosphate, 50µg/ml in Toluene, 1,2ml

4,4'-Dibromobiphenyl, 1.2ml x 50ug/ml, nonane