N-Chloroacetyl-2,6-diethylaniline, 100mg

Metformin hydrochloride, 100 µg/ml, Methanol, 1m

Octachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Monoethyl phthalate-3,4,5,6-d4, 100µg/ml in MeOH, 1ml