Indigotine (E 132), 1g

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

1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin , 1.2ml x 50ug/ml, nonane

Sodium iodide (NaI)