Flufenacet ESA sodium salt, 100µg/ml in MeOH, 1ml

Perfluoro-n-[1,2-13C2]decanoic acid, 1.2ml x 50ug/ml, methanol

4-Hydroxybenzoic acid, 1000µg/mL in MeOH, 1ml

Sodium perfluoro-1-nonanesulfonate, 1.2ml x 50ug/ml, methanol