EPA Method 515.1 - Performance Check Solution

Sodium perfluoro-[13C8]octanesulfonate, 50µg/ml in MeOH, 1,2ml

Caffeine, 1000µg/ml in MeOH, 1ml

4-Methyl-2-nitroanisole, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 119-10-8