13C6-Hexachlorobenzene, 100 µg/ml, Cyclohexane,

2-Methylhippuric acid, 100mg

Dibenzothiophene-d8, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 33262-29-2

Clofibric-d4 acid, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 1184991-14-7