EPA Method 500 Series Internal Std #4

2,2',3,4,4',5-Hexabromodiphenyl ether, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 182677-30-1

Naphthalene-d8, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 1146-65-2

Tetrachloroveratrole, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 944-61-6