Flumequine, 100 µg/ml, Methanol, 1ml

3,3'-Dichloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

1,1-Dichloroethane

2,2',3,4',5,5'-Hexachlorobiphenyl,100 µg/mL,isooctane,1mL,