(-)-Nicotine, 10 µg/ml, Methanol, 10ml

Serotonin-13C2,15N hydrochloride (ethylamine-13C2,15N),100 µg base/mL,MeOH,1mL

TOC standard, 200mg/l in H2O, 500ml

Ethylenediamine, 1000µg/ml in MeOH, 1ml