Metronidazole, certified, 0.25g

2,2',6,6'-Tetrachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 15968-05-5

Melatonin,neat,neat,10mg,

Polychlorobenzenes & Aroclor 1260