beta-Estradiol hemihydrate, 100 µg/ml, Methanol,

2,3',4,4'-Tetrabromodiphenyl ether, 50µg/ml IO,1ml

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

4,4'-Butylidenebis(6-tert-butyl-m-cresol)