PCB No. 170, 10 ng/µl, 10ml

1,2,4-Trimethyl-5-nitrobenzene

D3-Bifenox, 100 µg/ml, Acetonitrile, 1ml

Perfluoro-n-[1,2,3,4-13C4]heptanoic acid, 50µg/ml in MeOH, 1,2ml