4-isopropylphenyl diphenyl phosphate, 1.2ml x 50ug/ml, toluene

3,3',4,4'-Tetrabromo[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

Norflurazon, 100 µg/ml, Acetonitrile, 1ml

Octachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene