Calibration Standard Mix 3

3,4,6,7-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane

2,3,3',5-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL,

Mass-Labelled PCB Syringe Spike Solution, 1.2ml, nonane