EPA Method 548 Calibration Solution

ζ-1,2,5,6,9,10-Hexabromocyclododecane, 1.2ml x 50ug/ml, toluene

Mass-Labelled PCDD/PCDF Solution Mixture, 1.2ml, nonane

Chlorpyrifos-methyl, 100 µg/ml, Toluene, 1ml