Chlorpyrifos-methyl, 10 µg/ml, Acetone, 10ml

Sodium 1H,1H,2H,2H-perfluorodecane sulfonate (8:2), 50µg/ml in MeOH, 1,2ml

PCB Congeners (10 ppm)

Phenanthrene-13C6,100 µg/mL,n-nonane,1mL