EPA Method 500 Series Internal Std #4

Imidan, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 732-11-6

1,3,5-Trichlorobenzene, 100 µg/ml, Methanol, 1ml

Oxcarbazepine, certified, 50mg