Nitroguanidine, 100 µg/ml, Acetonitrile, 1ml

Metformin-d6-HCl, 100μg/ml in MeOH, 5ml

p-Xylene, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 106-42-3

Paraquat dichloride, 100 µg/ml, Water, 1ml