4,4’-Methylene bis(2-chloroaniline)

2,2',4,4',5,5'-Hexabromo[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

2,4'-DDE, 100 µg/ml, Ethyl acetate, 5ml

Tri-m-tolyl phosphate , 1.2ml x 50ug/ml, toluene