4,4'-DDE, 100 µg/ml, Toluene, 5ml

2,2',3,4,4',5,5'-Heptabromo[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

Trietazine, 100 µg/ml, Acetonitrile, 5ml

Perfluorodecylphosphonic acid, 50µg/ml in MeOH, 1,2ml