Matrix Spiking Solution, 1.2ml, nonane

Atropine, 100 µg/ml, Acetonitrile, 1ml

Quinapril hydrochloride, 1000µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 82586-55-8

2,3-Dichloronitrobenzene, 250mg