4-Chlorodibenzofuran, 1.2ml x 50ug/ml, nonane

PCB Congeners & Hexachlorobenzene Mix #2

Sodium 1H,1H,2H,2H-perfluoro-1-[1,2-13C2]-hexane sulfonate (4:2), 50µg/ml in MeOH, 1,2ml

PCB No. 30, 10µg/ml in Isooctane, 10ml