4-Epitetracycline hydrochloride, 50mg

n-Pentyltri-n-butyltin,1000 µg/mL,isooctane,1mL

n-Perfluorooctanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 335-67-1

0.10M NaOH Standard Reagent