17alpha-Ethynylestradiol,1000 µg/mL,MeOH,1mL,

Sodium dodecylbenzenesulfonate (hard type) (ABS 10

Perfluorooctadecanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 16517-11-6

Perfluoro-4-ethylcyclohexanesulfonate, 50µg/ml in MeOH, 1,2ml