Celecoxib,1000 µg/mL,acetonitrile,1mL,

Venlafaxine hydrochloride,neat,neat,10mg

3-Amino-9-ethylcarbazole, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 132-32-1

EPA Method 551.1 Internal Standard