WHO PCB Extraction Standard, 100pg/µl in nonane, 1,2ml

Pyrimidifen, 100 µg/ml, Acetonitrile, 1ml

n-C17/(n-C17 + n-C27) (Integration control) 2000 µg + 500 µg in isooctane solution in 1mL isooctane n-Heptadecane/n-Heptacosane = 4:1

1,2,3,4-Tetrachlorobenzene, 1000µg/ml in MeOH, 1ml