2,3,4,5-Tetrachlorophenol, 100 µg/ml, Methanol,

Mass-Labelled PCDD & PCB Internal Standard Solution, 1.2ml, nonane

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

Monobutyl phthalate (mBP), 100µg/mL in AcCN,1ml