Tetramethrin, 1000µg/ml in MeOH, 1ml

2-Bromo-3,7,8-trichlorodibenzo-p-dioxin (>95%), 1.2ml x 48ug/ml, toluene

Mass-Labelled PCDD Internal Standard Solution, 1.2ml x 40ng/ml, nonane

2-Bromoacetophenone