Mass-Labelled PCB Solution, 1.2ml x 1000ng/ml, nonane

Method 429 Surrogate Standard, 100µg/ml in Isooctane/10% toluene, 1,2ml

1,2,7,8-Tetrachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Sodium perfluoroethanesulfonate, 50µg/ml in MeOH, 1,2ml