Metoprolol (free base),neat,neat,50mg,

Parathion-d10 (diethyl-d10), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 350820-04-1

Mass-Labelled PCDF/PCB Syringe Spike, 1.2ml, nonane

Metoxuron, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 19937-59-8