PCB No. 18, certified, 25mg

n-Dotriacontane, ?13C: -28.34, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 544-85-4

Perfluorotetradecanoic acid, 50mg

Quality Control Standard of Mineral Oils 2 2x500µg/ml in n-Hexane i 1ml crimp-top