Ipronidazole, 100 µg/ml, Methanol, 5ml

L-Glutamic-d5 acid, 1000µg/ml in 0.1M HCl, 1ml

n-Perfluorooctanoic acid, ammonium salt, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 3825-26-1

2,3-Butanedione, 1000µg/ml in MeOH, 5ml