13C3-Caffeine, 100 µg/ml, Methanol, 1ml

Multi-Element Calibration Standard-4

1,4-Dibromobenzene, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 106-37-6

D5-Norfloxacin, 100 µg/ml, Acetonitrile, 1ml