2,3,4,4'-Tetrachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

4,4-Dichlorobiphenyl (BZ-15)

2,2',3',4,4',5,6'-Heptachloro-3-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

2,2',3,3',4,4',5,5',6-Nonabromo[13C12]diphenyl ether, 1.2ml x 50ug/ml, toluene