Toluene D8, certified, 0.5ml

2,3,3',4-Tetrahlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 74338-24-2

2,2',4',5-Tetrabromo-4-methoxydiphenyl ether, 1.2ml x 50ug/ml, nonane

Ammonium (NH4+)