EPA method 633 Analytes

4-tert-Octylphenol, certified, 0.25g

n-Heptadecane, ?13C: - 25.72, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 629-78-7

Perfluorobutyric acid, sodium salt, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2218-54-4