7H-Perfluoroheptanoic acid, 50µg/ml in MeOH, 5ml

4-Hydroxyphenylacetic acid, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 156-38-7

Ofloxacin, 100µg/mL in Acetonitrile, 1ml

Nitrite (NO2-) as N