n-Eicosane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 112-95-8

sec-Butyl methyl ether, neat, Solvent-neat, Unit 1ml, # of units-1, Cas.no. 6795-87-5

Pentanoic acid (Valeric), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 109-52-4

EPA Method 602 - Surrogate Standard