EPA Method 601 Internal Standard Back Catalog number: 19094 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679330 Ethyl benzoylformate, 250mg Price on request 1152.32-K-IO n-Dotriacontane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 544-85-4 Price on request 43028 GC/MS Calibration Standard Mix #2 Price on request