2-Ethyltoluene, 200 µg/ml, Methanol, 1ml

PCB Congeners & Hexachlorobenzene Mix #4

2,2',4,4',6,6'-Hexachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 33979-03-2

Carbon tetrachloride, 1000µg/ml in MeOH, 1ml