Hexachlorobenzene, 200µg/ml in MeOH, 1ml

Ethanol standard in water,1.3g/L,water, 1.5mL

Metformin, 1000μg/ml in MeOH, 1ml

4-Methylquinoline, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 491-35-0