Methabenzthiazuron, certified, 0.1g

Perfluorooctane sulfonic acid, 25mg

Benzo[k]fluoranthene-d12, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 93952-01-3

Desmethylmirtazapine hydrochloride,100 µg base/mL,acetonitrile,1mL