Naphthalene, 10µg/ml in Acetonitrile, 10ml

1,2,3,7,8-Pentachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

2,3,3',4,4',5,5'-Heptachlorobiphenyl, 5mg

1-Hydroxyacrine,neat,neat,10mg