Perfluorooctanesulfonic acid, 100µg/mL in MeOH,1ml

3-Isopropylphenol-d12, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-5, Cas.no. 1219805-35-2

Formaldehyde (0.5 ppm)

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