PCB No. 55, 100µg/ml in Isooctane, 1ml

Native PFCAs and PFSAs Solution/Mixture, 1.2ml, methanol

Benzo(a)pyrene, 100µg/ml in Acetonitrile, 1ml

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