n-Hydrocarbon Standard (C5-C18), 2000µg/ml in MeOH, 1ml

Fenthion-sulfone, 100 µg/ml, Acetonitrile, 5ml

2-Nitro-9-fluorenone, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3096-52-4

Ammonium (NH4+)