Penflufen, 100 µg/ml, Acetonitrile, 1ml

13C4-Fipronil, 100 µg/ml, Acetonitrile, 1ml

1,2,4,5-Tetrachlorobenzene, 1000µg/mL in Isooctane, 1ml

1,2,3,5-Tetrachloro[13C6]benzene, 1.2ml x 100ug/ml, isooctane