EPA Method 8121 Surrogate Standard Back Catalog number: 81204 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1137.17-K-IO n-Heptadecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 629-78-7 Price on request 2243.17-10MG Fusarenon-X, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 23255-69-8 Price on request 3655.20-5MG trans-Crocetine, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 27876-94-4 Price on request