4-Chloro-3-methylphenol, 100µg/ml in MeOH, 1ml

1,2,3,8,9-Pentachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Benzo(g,h,i)perylene, 10µg/ml in Acetonitrile, 10ml

Aroclor 1221 in Transformer Oil