PCB No. 112, 100ug/ml in Isooctane, 1ml

Methoxychlor (13C12), 100µg/ml in Nonane, 1,2ml

1-Chloroperfluorohexane, 5g

2,3,3',4,5,5'-Hexachloro-4'-methoxy[13C12]biphenyl, 1.2ml x 50ug/ml, toluene