Simazine, 100µg/ml in Methanol, 1ml

Perfluoro-n-[1,2,3,4,5-13C5]nonanoic acid, 50µg/ml in MeOH, 1,2ml

Heptachlor-endo-epoxide (isomer A), 1.2mL x 100ug/mL, nonane

1,2-Dimethoxybenzene