EPA Method 502.2 Internal Standard Back Catalog number: 91703 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4505-K-IO Hydrocarbon mixture C14-C32 C14,C16,C17,Pristane,C18,Phytane,C19,C20,C22,C24,C16,C28,C32 1mg/ml each in isooctane Price on request 94193 Supplemental PAH Standard Price on request 0975.27-100-IOX10 d4 C27 alpha alpha alpha (20R)-Cholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 205529-74-4 Price on request