tert-Butylhydroquinone, 250mg

Difloxacin hydrochloride, 100 µg/ml, Methanol, 1

4,6-Dimethyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1207-12-1

EPA 525 Spike Mix