EPA Method 515.1 Internal Standard

14-Hydroxycodeine (7,8-Didehydro-4,5a-epoxy-3-methoxy-17-methylmorphinan-6a,14-diol), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 4829-46-3

Trimellitic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 528-44-9

n-Decane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 124-18-5