2,4,5-T-methyl ester, 100 µg/ml, Acetonitrile, 1

Arochlor 1260 , 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 11096-82-5

Metoprolol (free base), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 51384-51-1

PCB Mix 0.3 ppb