Sodium p-n-undecylbenzenesulfonate, 10mg

4-Aminoazobenzene, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 60-09-3

Metformin-HCl, 100µg/ml in Acetonitrile, 5ml

Prothiofos, 10.0 µg/ml, Ethyl acetate, 10ml