Roxithromycin, 100 µg/ml, Methanol, 1ml

Perfluorooctane sulfonic acid, 100µg/mL in MeOH:Water, 1ml

Dibenzothiophene-d8, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 33262-29-2

Aromatic EPH Standard