D3-Ofloxacin, 100 µg/ml, Acetonitrile, 1ml

4,4'-DDT (ring-13C12), 100ug/ml in n-Nonane, 1,2ml

Artificial foodstuff-Free sugars and glucose, 50g

Propachlor ESA sodium salt, 100µg/ml in MeOH, 1ml