(-)-Nicotine, 100 µg/ml, Methanol, 1ml

2-Nitrophenol, 100 µg/ml, Methanol, 1ml

Dimethachlor Metabolite CGA 369873, 100µg/ml in MeOH, 1ml

n-Heneicosane, ?13C: -28.59, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 629-94-7