n-Pentacosane

1,1,1-Trichloroethane (contains stabilisor 0.05% low alkyl epoxide), in ampoule, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 71-55-6

Methyl-2-[4-(2-methylpropyl)phenyl]propanoate, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 61566-34-5

EPA Method 551.1 Internal Standard