Perfluoro-3,5,5-trimethylhexanoic acid, 1.2ml x 50ug/ml, methanol

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

epsilon-HCH (BHC)

d4 C27 alpha alpha alpha (20R)-Cholestane