(13C10)Kepone, 1.2mL x 100ug/mL, nonane

Roxithromycin, 100 µg/ml, Methanol, 1ml

N-ethyl-d5-perfluoro-1-octanesulfonamidoacetic acid, 50µg/ml in MeOH, 1,2ml

2,4,4-Trichlorobiphenyl (BZ-28)