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

Sodium 1H,1H,2H,2H-perfluorooctane sulfonate (6:2), 50µg/ml in MeOH, 1,2ml

2-Methylchrysene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3351-32-4

Bis(2-ethylhexyl)-3,4,6-tribromo phthalate,50 µg/mL ,toluene,1mL,