Bis(2-methoxyethyl) adipate

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

Pencycuron, 100 µg/ml, Acetonitrile, 5ml

1,2,4,6,7,9-Hexachloro(13C12)dibenzo-p-dioxin, 1.2mL x 50ug/mL, toluene