Mass-Labelled PCDF/PCB Syringe Spike, 1.2ml, nonane

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

Combined Window Defining/TCDD Resolution Mix, 1.2ml, nonane

1,2,3-Trichloropropane